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- 1-aminocyclopropane-1-carboxylate deaminase
- 1-aminocyclopropane-1-carboxylic acid
- 1-bromopropane
- 1-butanol
- 1-butene
- 1-butyl-3-methylimidazolium hexafluorophosphate
- 1-butyne
- 1-decanol
- 1-ethyl-3-methylimidazolium chloride
- 1-hexanol
- 1-hexene
- 1-hydroxypyrene
- 1-methylimidazole
- 1-naphthol
- 1-naphthylamine
- 1-nitropyrene
- 1-octanol
- 1-octen-3-ol
- 1-octene
- 1-pentanol
- 1-phenylethanol
- 1-propanol
- 1-tetradecanol
- 100-year flood
- 15-crown-5
- 18-electron rule
- 2-acrylamido-2-methylpropane sulfonic acid
- 2-aminothiazole
- 2-aminothiophenol
- 2-butanol
- 2-butene
- 2-butoxyethanol
- 2-butyne
- 2-chlorophenol
- 2-ethoxyethanol
- 2-ethyl-2-oxazoline
- 2-ethylanthraquinone
- 2-ethylhexanol
- 2-ethylhexyl acrylate
- 2-hexanol
- 2-hexanone
- 2-hydroxybiphenyl
- 2-imidazoline
- 2-iodoxybenzoic acid
- 2-mercaptoethanol
- 2-methoxyestradiol
- 2-methoxyethanol
- 2-methyl-2-butene
- 2-methylfuran
- 2-methylheptane
- 2-methylhexane
- 2-methylisoborneol
- 2-methyltetrahydrofuran
- 2-naphthol
- 2-naphthylamine
- 2-nitroaniline
- 2-octyl cyanoacrylate
- 2-oxoglutarate
- 2-pentanol
- 2-pentanone
- 2-pentene
- 2-phenyl-2-propanol
- 2-phosphoglycolate
- 2-pyrrolidone
- 20-hydroxyecdysone
- 2024 aluminium alloy
- 2024-t3 aluminum
- 21-crown-7
- 27-hydroxycholesterol
- 3-aminophenol
- 3-carene
- 3-chlorophenol
- 3-mercaptopyruvate sulfurtransferase
- 3-methylheptane
- 3-methylpentane
- 3-nitroaniline
- 3-pentanol
- 3-phosphoglycerate
- 3-phosphoglyceric acid
- 3' end
- 3' UTR
- 4-aminobenzoic acid
- 4-aminobiphenyl
- 4-aminophenol
- 4-aminopyridine
- 4-coumarate-coa ligase
- 4-dimethylaminopyridine
- 4-ethylphenol
- 4-hydroxybenzaldehyde
- 4-hydroxybenzoic acid
- 4-hydroxycoumarin
- 4-hydroxycoumarins
- 4-hydroxynonenal
- 4-methyl-1-pentene
- 4-methylpyridine
- 4-nitroaniline
- 4-nitrophenol
- 4-tert-butylcatechol
- 4-tert-butylphenol
- 4+4 photocycloaddition
- 5-fluorouracil
- 5-hydroxyindoleacetic acid
- 5-hydroxymethylcytosine
- 5-hydroxytryptophan
- 5' UTR
- 5052 aluminium alloy
- 5083 aluminium alloy
- 6-APA
- 6-phosphogluconate dehydrogenase
- 6061 aluminium alloy
- 6063 aluminium alloy
- 6PPD
- 7-ACA
- 7-dehydrocholesterol
- 7075 aluminium alloy
- 8-aminoquinoline
- 8-oxo-2'-deoxyguanosine
- 8-oxoguanine
- 9-fluorenylmethyl chloroformate
- A-DNA
- A36 steel
- A514 steel
- Ab initio methods
- Abietane
- Abietic acid
- Abinit
- Abraxane
- Abscisic acid
- Absolute configuration
- ABTS
- ACC
- Accelerated solvent extraction
- Accessible surface area
- Accretion disks
- ACE
- ACE2
- Acenaphthene
- Acenaphthylene
- Acene
- Acenocoumarol
- Acentric factor
- Acetal
- Acetaldehyde
- Acetaldehyde dehydrogenase
- Acetamide
- Acetanilide
- Acetate
- Acetazolamide
- Acetic acid
- Acetic anhydride
- Acetoacetate
- Acetoacetic acid
- Acetochlor
- Acetoin
- Acetolactate synthase
- Acetone
- Acetone cyanohydrin
- Acetonitrile
- Acetophenone
- Acetosyringone
- Acetyl
- Acetyl chloride
- Acetyl group
- Acetyl iodide
- Acetyl-CoA synthetase
- Acetylacetone
- Acetylation
- Acetylcholine
- Acetylcholinesterase inhibitors
- Acetylene
- Acetylenic
- Acetylide
- Acetyltransferase
- Aciclovir
- Acid attack
- Acid catalysis
- Acid catalysts
- Acid dissociation constant
- Acid dyes
- Acid fuchsin
- Acid gas
- Acid hydrolysis
- Acid neutralizing capacity
- Acid phosphatase
- Acid salts
- Acid strength
- Acid value
- Acid-base reaction
- Acid-base titration
- Acidifiers
- Acidity regulator
- Acidulants
- Acipimox
- Acridine
- Acridine orange
- Acridone
- Acrolein
- Acrylamide
- Acrylate
- Acrylate polymer
- Acrylic acid
- Acrylonitrile
- Actinium
- Actinium-225
- Activated carbon
- Activated charcoal
- Activated complex
- Activation energy
- Active ester
- Active ingredients
- Active site
- Activity coefficients
- Acyclic diene metathesis
- Acyl
- Acyl azide
- Acyl chlorides
- Acyl group
- Acyl halides
- Acyl-coa dehydrogenase
- Acyl-coa oxidase
- Acylation
- Acyltransferase
- Adamantane
- Adaptive sampling
- Added mass
- Addition polymers
- Addition reactions
- Additive effect
- Adefovir
- Adenine
- Adenosine
- Adenosine diphosphate
- Adenosine kinase
- Adenosine monophosphate
- Adenosine receptor antagonist
- Adenylyl cyclase
- Adipic acid
- Adiponitrile
- Adjuvant therapy
- ADP
- Adsorbed natural gas
- Adsorption
- Adsorption refrigeration
- Adulterants
- Adverse drug reaction
- Adverse events
- Adverse pressure gradient
- Aeration
- Aerobic denitrification
- AES
- Affinity chromatography
- AFLP
- AFM phases
- Aft phases
- Aggregation
- Aggregation number
- Agostic interaction
- Agrochemicals
- Air classifier
- Air compressor
- Air flow meter
- Air parcel
- Air separation
- Airy wave theory
- Ajmalicine
- AL-6XN
- ALA
- Alachlor
- Alanine
- Alarm management
- Alarmones
- ALARP
- Alclad
- Alcohol
- Alcohol abuse
- Alcohol dehydrogenase
- Alcohol dependence
- Alcohol fuel
- Alcohol oxidase
- Alcohol oxidation
- Alcohol sulfotransferase
- Alcoholism
- Alcohols
- Aldehyde dehydrogenase
- Aldehyde oxidase
- Aldehydes
- Aldicarb
- Aldol
- Aldol condensation
- Aldol reaction
- Aldose reductase
- Aldose reductase inhibitor
- Aldoses
- Aldosterone
- Aldrin
- Alfalfa
- Algal blooms
- Alginate
- Alginic acid
- Alicyclic
- Aliphatic
- Aliphatic compounds
- Aliquat 336
- Alite
- Alizarin
- Alizarin red S
- Alkali halides
- Alkali metals
- Alkali salts
- Alkaline
- Alkaline batteries
- Alkaline battery
- Alkaline earth metals
- Alkaline hydrolysis
- Alkaline phosphatase
- Alkaline water electrolysis
- Alkalinity
- Alkalis
- Alkane
- ALKB
- Alkenes
- Alkenylsuccinic anhydrides
- Alkoxides
- Alkoxy
- Alkoxy group
- Alkyd
- Alkyl
- Alkyl groups
- Alkyl halides
- Alkyl ketene dimer
- Alkyl phosphates
- Alkyl sulfonate
- Alkylammonium
- Alkylating agents
- Alkylation
- Alkylbenzene
- Alkylbenzene sulfonate
- Alkylphenols
- Alkyne metathesis
- Alkynes
- Allantoin
- Allene
- Alliin
- Allotrope
- Allotropes of boron
- Allotropes of carbon
- Allotropes of oxygen
- Allotropes of phosphorus
- Allotropy
- Alloy 20
- Alloy steel
- Alloys
- Allyl
- Allyl alcohol
- Allyl bromide
- Allyl chloride
- Allyl group
- Allyl isothiocyanate
- Allylamine
- Alnico
- Aloe
- Aloe emodin
- Alpha 1-antitrypsin
- Alpha carbon
- Alpha case
- Alpha cleavage
- Alpha particles
- Alpha-1 antitrypsin
- Alpha-amylase
- Alpha-tocopherol
- Alternative fuel
- Alternative splicing
- Alternatives assessment
- Alum
- Alumel
- Alumina
- Aluminate
- Aluminides
- Aluminium
- Aluminium alloys
- Aluminium battery
- Aluminium bronze
- Aluminium carbide
- Aluminium chlorohydrate
- Aluminium compounds
- Aluminium foil
- Aluminium gallium arsenide
- Aluminium gallium nitride
- Aluminium hydride
- Aluminium hydroxide
- Aluminium isopropoxide
- Aluminium nitrate
- Aluminium nitride
- Aluminium oxide
- Aluminium oxide hydroxide
- Aluminium oxynitride
- Aluminium phosphate
- Aluminium phosphide
- Aluminium recycling
- Aluminium silicate
- Aluminium smelting
- Aluminium sulfate
- Aluminium-air battery
- Aluminium-copper alloys
- Aluminium-lithium alloys
- Aluminium-magnesium alloys
- Aluminium-silicon alloys
- Aluminized steel
- Aluminosilicate
- Aluminum foil
- Aluminum powder
- Amalgam
- Amantadine
- Amaranth
- Amatol
- American Iron and Steel Institute
- Americium
- Americium-241
- Amidase
- Amides
- Amidines
- Amidoamine
- Amifostine
- Amikacin
- Amiloride
- Aminals
- Amination
- Amine gas treating
- Amine oxidase
- Amine oxide
- Amines
- Amino acids
- Amino alcohols
- Aminocaproic acid
- Aminoglycosides
- Aminolevulinic acid
- Aminomethylphosphonic acid
- Aminopeptidase
- Aminophenol
- Aminophosphonate
- Aminopolycarboxylic acid
- Aminopyridine
- Amiodarone
- Ammonia
- Ammonia borane
- Ammonia monooxygenase
- Ammonia production
- Ammonia solution
- Ammonium
- Ammonium acetate
- Ammonium bifluoride
- Ammonium bisulfate
- Ammonium bromide
- Ammonium carbamate
- Ammonium carbonate
- Ammonium chloride
- Ammonium dihydrogen phosphate
- Ammonium dinitramide
- Ammonium fluoride
- Ammonium hexachloroplatinate
- Ammonium hexafluorophosphate
- Ammonium hydroxide
- Ammonium iron sulfate
- Ammonium lauryl sulfate
- Ammonium metavanadate
- Ammonium nitrate
- Ammonium oxalate
- Ammonium perchlorate
- Ammonium perrhenate
- Ammonium persulfate
- Ammonium phosphate
- Ammonium polyphosphate
- Ammonium sulfate
- Ammonium sulfite
- Ammonium thiosulfate
- Ammonolysis
- Amorphous calcium carbonate
- Amorphous carbon
- Amorphous ice
- Amorphous metal
- AMP deaminase
- AMP-activated protein kinase
- AMPA
- AMPA receptors
- Amphipathic
- Amphiphiles
- Amphoteric
- Amphotericin
- Amphoterism
- Ampicillin
- AMS
- Amsacrine
- Amyl alcohol
- Amylase
- Anabasine
- Anaerobic corrosion
- Anaerobic glycolysis
- Anaerobic oxidation of methane
- Analogue
- Analytes
- Analytical chemistry
- Analytical techniques
- Anammox
- Anandamide
- Anatabine
- Anatoxin-a
- Anchor ice
- Andersen thermostat
- Androstenedione
- Anethole
- ANFO
- Anhydrides
- Anhydrous
- Anilides
- Aniline
- Animal drugs
- Anion-exchange chromatography
- Anion-exchange membranes
- Annatto
- Annulation
- Annulene
- Anode
- Anodic bonding
- Anodic protection
- Anomalous diffusion
- Anoxic
- Anoxic waters
- Antacids
- Antarctic sea ice
- Anthocyanidins
- Anthracene
- Anthracyclines
- Anthranilic acid
- Anthraquinone
- Anthraquinones
- Anthrone
- Anti-foaming agent
- Anti-inflammatory
- Antibiotics
- Antibody mimetics
- Antibonding
- Antibonding molecular orbital
- Anticaking agents
- Antidepressants
- Antiemetics
- Antiknock agent
- Antimonial
- Antimonide
- Antimony
- Antimony pentafluoride
- Antimony pentoxide
- Antimony telluride
- Antimony trichloride
- Antimony trioxide
- Antimony trisulfide
- Antinutrients
- Antioxidants
- Antiozonant
- Antipsychotic
- Antipyretics
- Antisense
- Anxiolytic
- APCI
- Apigenin
- Aporphine
- Apparent oxygen utilisation
- Apparent viscosity
- Aprotic
- Aqua regia
- Aquatic life
- Aquatic toxicology
- Aqueous solutions
- Aquo complex
- Arachidonic acid
- Archimedes' principle
- Architectural glass
- Arecoline
- Argatroban
- Argentometry
- Arginase
- Arginine
- Arginine decarboxylase
- Arginine deiminase
- Argon
- Argonaute
- Aristolochic acid
- Aromatase
- Aromatic
- Aromatic amines
- Aromatic amino acids
- Aromatic compounds
- Aromatic hydrocarbons
- Aromaticity
- Aromatization
- Arrhenius equation
- Arrhenius plot
- Arsanilic acid
- Arsenate
- Arsenate reductase
- Arsenic
- Arsenic acid
- Arsenic pentoxide
- Arsenic trichloride
- Arsenic trioxide
- Arsenic trisulfide
- Arsenical copper
- Arsenite
- Arsenobetaine
- Arsenous acid
- Arsine
- Artemether
- Artemisinin
- Artesunate
- Artificial enzymes
- Artificial photosynthesis
- Artificial seawater
- Aryl
- Aryl groups
- Aryl halides
- Aryl radical
- Arylsulfatase
- ASA
- Ascorbate peroxidase
- Ascorbic acid
- Ascorbyl palmitate
- Ashing
- Asparaginase
- Asparagine
- Aspartame
- Aspartate aminotransferase
- Aspartate transaminase
- Aspartic acid
- Asphaltene
- Aspirin
- Associated petroleum gas
- Astatine
- Astaxanthin
- ASTM A500
- Astringents
- Asymmetric carbon
- Asymmetric dimethylarginine
- Asymmetric flow field flow fractionation
- Asymmetric induction
- ATE complex
- ATEX directive
- Atmosphere
- Atmospheric chemistry
- Atmospheric methane
- Atmospheric pressure photoionization
- Atmospheric science
- ATMP
- Atom
- Atomic absorption spectroscopy
- Atomic carbon
- Atomic emission spectroscopy
- Atomic nucleus
- Atomic number
- Atomic radius
- Atomic ratio
- Atomism
- Atorvastatin
- ATPase
- Atrazine
- Atrazine chlorohydrolase
- ATRP
- Atypical antipsychotic
- AUDIT
- Auranofin
- Aurivillius phases
- Aurophilicity
- Autocatalysis
- Autocatalytic
- Autodock
- Autoignition temperature
- Autoprotolysis
- Autotaxin
- Autoxidation
- Auxiliary electrode
- Auxochrome
- Avobenzone
- Axial chirality
- Aza-
- Aza-cope rearrangement
- Azathioprine
- Azelaic acid
- Azeotropic
- Azide
- Aziridine
- Aziridines
- Azo compounds
- Azo coupling
- Azo dyes
- Azobenzene
- Azobisisobutyronitrile
- Azodicarbonamide
- Azoles
- Azulene
- B vitamins
- Babbitt
- Baby shampoo
- BACE1-AS
- Backbone
- Baclofen
- Baicalein
- Baicalin
- Balloons
- Bamboo charcoal
- Barbecue
- Barbier reaction
- Barbituric acid
- Barium
- Barium borate
- Barium chloride
- Barium chromate
- Barium ferrite
- Barium hydroxide
- Barium nitrate
- Barium oxide
- Barium peroxide
- Barium sulfate
- Barometers
- Barotropic fluid
- Base conditions
- Base oil
- Basic oxides
- Basis set
- Bassanite
- Batch reactor
- Bating
- Battery
- Battery recycling
- Battery swapping
- Bayer process
- BBP
- Beakers
- Belite
- Bellows
- Bendiocarb
- Bent metallocenes
- Benzaldehyde
- Benzalkonium chloride
- Benzene
- Benzenediol
- Benzenesulfonic acid
- Benzenetricarboxylic acid
- Benzenoid
- Benzidine
- Benzimidazole
- Benzisothiazolinone
- Benznidazole
- Benzoates
- Benzocyclobutene
- Benzodiazepines
- Benzofuran
- Benzoic acid
- Benzoin condensation
- Benzophenone
- Benzopyran
- Benzopyrene
- Benzopyrone
- Benzoquinone
- Benzothiazole
- Benzothiophene
- Benzotriazole
- Benzoxazine
- Benzoxazole
- Benzoyl chloride
- Benzoyl peroxide
- Benzoylecgonine
- Benzyl
- Benzyl alcohol
- Benzyl bromide
- Benzyl chloride
- Benzylamine
- Benzylisoquinoline alkaloids
- Benzylpenicillin
- Berberine
- Berendsen thermostat
- Berkelium
- Bernoulli's principle
- Berylliosis
- Beryllium
- Beryllium copper
- Beryllium fluoride
- Beryllium hydroxide
- BET theory
- Beta scission
- Beta-alanine
- Beta-alumina solid electrolyte
- Beta-carotene
- Beta-lactam antibiotics
- Beta-lactamase
- Beta-lactams
- Betaine
- Betalains
- Betanin
- Betulin
- Betulinic acid
- Bicarbonate
- Bicinchoninic acid
- Bicinchoninic acid assay
- Bicyclohexyl
- Bidentate
- Bifenthrin
- Bifunctional
- Biginelli reaction
- Biguanide
- Bilayer
- Bilayer graphene
- Bile acids
- Bimolecular
- Binap
- Binary phase
- Binding constant
- Binding selectivity
- Binge drinking
- Bio-oil
- Bioaccumulation
- Bioactive glass
- Bioanalysis
- Biocatalysis
- Biochanin a
- Biochemical engineering
- Biochemists
- Bioconcentration
- Bioconversion
- Biodegradable polymers
- Biodesulfurization
- Bioelectrochemical reactor
- Biogenic amines
- Biogenic silica
- Biogeochemistry
- Bioglass 45s5
- Biohydrogen
- Bioinorganic chemistry
- Biointerface
- Biological activity
- Biological pump
- Biomagnification
- Biomineralization
- Biomonitoring
- Biopharmaceutics Classification System
- Biosurfactants
- Biosynthesis
- Biphenyl
- Bipolaron
- Bipyridine
- Bis-GMA
- Bisdemethoxycurcumin
- Bismuth
- Bismuth chloride
- Bismuth ferrite
- Bismuth hydroxide
- Bismuth nitrate
- Bismuth oxide
- Bismuth oxychloride
- Bismuth selenide
- Bismuth silicon oxide
- Bismuth subcarbonate
- Bismuth subsalicylate
- Bismuth sulfide
- Bismuth telluride
- Bismuth titanate
- Bismuth vanadate
- bisphenol A
- bisphenol A diglycidyl ether
- bisphenol F
- bisphenol S
- Bisphosphonates
- Bistriflimide
- Bisulfide
- Bisulfite
- Bite angle
- Bittern
- Biuret
- Bivalent
- Bixin
- Bjerrum length
- Black oxide
- Black silicon
- Blank value
- Blast furnace gas
- Blast walls
- Blast wave
- Bleach
- Bleach activator
- Bleomycin
- Bleomycin hydrolase
- BLEVE
- Blood lipids
- Blowouts
- Blowtorch
- Blue ice
- Bodipy
- Bog iron
- Boiler feedwater pump
- Boiling-point elevation
- Bombesin
- Bombykol
- Bond cleavage
- Bond dissociation energy
- Bond energy
- Bond order
- Bond-dissociation energy
- Bonding molecular orbital
- Bone ash
- Bone char
- Boojum
- Booster pump
- Borane
- Boranes
- Borate
- Borate glass
- Borax
- Borazine
- Borides
- Borneol
- Bornyl acetate
- Borohydride
- Boron arsenide
- Boron carbide
- Boron deficiency
- Boron group
- Boron nitride
- Boron nitride nanotubes
- Boron oxide
- Boron phosphate
- Boron steel
- Boron suboxide
- Boron tribromide
- Boron trichloride
- Boron trifluoride
- Boron trifluoride etherate
- Boron trioxide
- Boronic acid
- Borophene
- Borophosphosilicate glass
- Borosilicate glass
- Borospherene
- Boudouard reaction
- Boundary layer
- Boundary layer control
- Boundary layer thickness
- Brackish
- Brackish water
- Branched-chain amino acids
- Branching
- Brass
- Brassinolide
- Brassinosteroids
- Breakthrough therapy
- Brevetoxin
- Bridging
- Bridging ligand
- Brilliant blue FCF
- Brine
- Brine rejection
- Briquettes
- Brisance
- Britannia metal
- Brivaracetam
- Brix
- Bromate
- Bromelain
- Bromide
- Brominated flame retardants
- Bromine
- Bromine number
- Bromine water
- Bromobenzene
- Bromochloromethane
- Bromodichloromethane
- Bromoform
- Bromomethane
- Bromophenol
- Bromophenol blue
- Bromothymol blue
- Bromotrifluoromethane
- Bromous acid
- Bromoxynil
- Bronopol
- Bronze
- Brown carbon
- BTL
- BTX
- Bubble column reactor
- Buckingham potential
- Buckypaper
- Buffer solution
- Building blocks
- Bulk polymerization
- Bunsen burner
- Bunsen reaction
- Burger's equation
- Busulfan
- Butadiene
- Butane
- Butane torch
- Butanediol
- Butanol
- Butanone
- Butene
- Buthionine sulfoximine
- Button cell
- Butyl acetate
- Butyl acrylate
- Butyl butyrate
- Butyl cyanoacrylate
- Butyl rubber
- Butylated hydroxyanisole
- Butylated hydroxytoluene
- Butylparaben
- Butyraldehyde
- Butyric acid
- Butyrylcholine
- Butyrylcholinesterase
- C-dna
- C-H activation
- C-jun n-terminal kinases
- CAB
- Cacodylic acid
- Cadmium
- Cadmium chloride
- Cadmium fluoride
- Cadmium hydroxide
- Cadmium poisoning
- Cadmium sulfide
- Cadmium telluride
- Caesium
- Caesium bromide
- Caesium chloride
- Caesium-137
- Cafestol
- Caffeic acid
- Caffeic acid phenethyl ester
- Caffeine
- Cage effect
- Caking
- Calcination
- Calcipotriol
- Calcium
- Calcium acetate
- Calcium alginate
- Calcium aluminate
- Calcium aluminates
- Calcium aluminoferrite
- Calcium aluminosilicate
- Calcium arsenate
- Calcium bicarbonate
- Calcium borate
- Calcium carbide
- Calcium carbonate
- Calcium channel blockers
- Calcium chlorate
- Calcium chloride
- Calcium Chromate
- Calcium citrate
- Calcium cyanamide
- Calcium disilicide
- Calcium gluconate
- Calcium hydride
- Calcium hydroxide
- Calcium hypochlorite
- Calcium iodide
- Calcium lactate
- Calcium looping
- Calcium magnesium acetate
- Calcium nitrate
- Calcium nitride
- Calcium nitrite
- Calcium oxalate
- Calcium oxide
- Calcium peroxide
- Calcium phosphate
- Calcium phosphide
- Calcium pyrophosphate
- Calcium silicate
- Calcium silicate hydrate
- Calcium silicide
- Calcium stearate
- Calcium sulfate
- Calcium sulfite
- Calcium titanate
- Calcium-48
- Calibration curve
- Calibration gas
- Caliche
- Calicheamicin
- Californium
- Calixarene
- Caloric theory
- Calorific value
- Camostat
- Campesterol
- Camphene
- Camphor
- Camphorquinone
- Camphorsulfonic acid
- Camptothecin
- Candelilla wax
- Cannabidiol
- Cannabis
- Canthaxanthin
- Capacity loss
- CAPE
- Capillary action
- Capillary condensation
- Capillary electrophoresis
- Capillary pressure
- Capillary waves
- Capric acid
- Caprolactam
- Caprolactone
- Capsaicin
- Capsanthin
- Capsules
- Captan
- Captive bubble method
- Captopril
- Carbamate
- Carbamic acid
- Carbamoyl phosphate
- Carbanions
- Carbaryl
- Carbazole
- Carbendazim
- Carbenes
- Carbenium ion
- Carbenoids
- Carbide
- Carbide-derived carbon
- Carbocations
- Carbodiimide
- Carbofuran
- Carbohydrase
- Carbon black
- Carbon capture and storage
- Carbon capture and utilization
- Carbon chain
- Carbon compounds
- Carbon cycle
- Carbon dioxide
- Carbon dioxide flooding
- Carbon disulfide
- Carbon group
- Carbon in pulp
- Carbon monoxide
- Carbon monoxide dehydrogenase
- Carbon monoxide detectors
- Carbon monoxide poisoning
- Carbon monoxide-releasing molecules
- Carbon nanocones
- Carbon nanofibers
- Carbon nanotube field-effect transistor
- Carbon nanotubes
- Carbon nitride
- Carbon sinks
- Carbon source
- Carbon steel
- Carbon tetrachloride
- Carbon-12
- Carbon-carbon bonds
- Carbon-fluorine bonds
- Carbon-neutral fuel
- Carbon-nitrogen bonds
- Carbonatation
- Carbonate
- Carbonate esters
- Carbonate hardness
- Carbonated
- Carbonated water
- Carbonation
- Carbonic acid
- Carbonic anhydrase
- Carbonium ion
- Carbonyl
- Carbonyl fluoride
- Carbonyl groups
- Carbonyl iron
- Carbonyl reductase
- Carbonyl sulfide
- Carbonylation
- Carboplatin
- Carboranes
- Carbosulfan
- Carboxyhemoglobin
- Carboxylates
- Carboxylation
- Carboxylesterase
- Carboxylic acids
- Carboxymethyl cellulose
- Carbyne
- Cardiac glycosides
- Carmustine
- Carnauba wax
- Carnitine
- Carnotite
- Carotene
- Carvacrol
- Carvone
- Caryophyllene
- CAS numbers
- CAS Registry Numbers
- Casein kinase
- Caspase
- Caspase 2
- Caspase 3
- Caspase-9
- CASTEP
- Castor oil
- Catalase
- Catalyst poisoning
- Catalyst support
- Catalysts
- Catalytic combustion
- Catalytic cycles
- Catalytic oxidation
- Catalytic reforming
- Catechin
- Catechol
- Catechol dioxygenase
- Catechol oxidase
- Catechol-o-methyltransferase
- Catecholamines
- Catenanes
- Cathepsin
- Cathepsin k
- Cathodic
- Cathodic protection
- Cationic polymerization
- Cativa process
- Caustic
- Cavitand
- Cavitation
- CCA
- CCVD
- CDK inhibitors
- cDNA
- CDOM
- CEC
- Cefixime
- Cefotaxime
- Cefuroxime
- Celastrol
- Cellobiose dehydrogenase
- Cellobiose phosphorylase
- Cellulase
- Cellulose acetate phthalate
- Cellulose synthase
- Cellulosic ethanol
- Cemented carbide
- Cementite
- Centrifugal partition chromatography
- Cephalosporin
- Ceramic membranes
- Ceramidase
- Ceria-zirconia
- Cerium
- Cerium carbonate
- Cerium hexaboride
- Cerium oxalate
- Cerium oxide
- Cerium sulfate
- Cetane index
- Cetane number
- Cetrimonium bromide
- Cetyl palmitate
- Cetyltrimethylammonium bromide
- CFB
- CFPP
- Chain propagation
- Chain reactions
- Chain scission
- Chain termination
- Chain transfer
- Chain-growth polymerization
- Chalcanthite
- Chalcogenide glass
- Chalcogenides
- Chalcogens
- Chalcone synthase
- Channel blockers
- Chaotic mixing
- Charcoal
- Charge transfer coefficient
- Charging station
- CHARMM
- Charring
- Chavicol
- Chelate
- Chelation
- Chelex 100
- Chemical accidents
- Chemical affinity
- Chemical bonds
- Chemical change
- Chemical composition
- Chemical compounds
- Chemical decomposition
- Chemical element
- Chemical engineer
- Chemical engineering
- Chemical equilibrium
- Chemical formula
- Chemical hazards
- Chemical ionization
- Chemical kinetics
- Chemical ligation
- Chemical looping combustion
- Chemical milling
- Chemical oscillator
- Chemical plants
- Chemical polarity
- Chemical potential
- Chemical process
- Chemical properties
- Chemical purity
- Chemical reaction
- Chemical reaction engineering
- Chemical reaction models
- Chemical reactor
- Chemical safety
- Chemical safety assessment
- Chemical shift
- Chemical species
- Chemical stability
- Chemical state
- Chemical structure
- Chemical substances
- Chemical symbols
- Chemical synthesis
- Chemical test
- Chemical thermodynamics
- Chemical vapor transport
- Chemically inert
- Chemically modified electrodes
- Chemisorption
- Chemistry
- Chemkin
- Chemometrics
- Chemoselectivity
- Chicory
- Chimneys
- Chiral
- Chiral drugs
- Chiral phosphoric acid
- Chitin deacetylase
- Chitin synthase
- Chitinase
- Chitobiose
- Chlamydomonas reinhardtii
- Chloral
- Chloralkali process
- Chlorambucil
- Chloramine-t
- Chloramines
- Chloramphenicol
- Chlorate
- Chlordane
- Chloride
- Chloride process
- Chlorinated paraffins
- Chlorinated polyethylene
- Chlorinated polyvinyl chloride
- Chlorine
- Chlorine dioxide
- Chlorine fluoride
- Chlorine trifluoride
- Chlornaphazine
- Chloroacetaldehyde
- Chloroacetic acid
- Chloroauric acid
- Chlorobenzene
- Chlorodifluoromethane
- Chloroethane
- Chloroethylene oxide
- Chlorofluorocarbons
- Chloroform
- Chloroformate
- Chlorogenic acid
- Chloromethane
- Chloromethyl methyl ether
- Chlorophenol
- Chlorophyll
- Chlorophyll a
- Chlorophyll b
- Chlorophyll fluorescence
- Chlorophyllin
- Chloroplatinic acid
- Chloroprene
- Chlorothalonil
- Chlorotoluene
- Chlorotoxin
- Chlorotrifluoromethane
- Chlorous acid
- Chlorpromazine
- Chlorpropamide
- Chlorpyrifos
- Chlortetracycline
- Chocolate
- Choked flow
- Cholecalciferol
- Cholesterol
- Cholesterol oxidase
- Cholesteryl esters
- Cholic acid
- Choline
- Choline acetyltransferase
- Choline chloride
- Choline kinase
- Choline oxidase
- Cholinesterase inhibitors
- Chondroitin
- Chondroitin sulfate
- Chorismate mutase
- Chromate
- Chromate and dichromate
- Chromate conversion coating
- Chromatography
- Chromatography column
- Chrome alum
- Chrome plating
- Chrome steel
- Chrome yellow
- Chromel
- Chromic acid
- Chromium
- Chromium carbide
- Chromium hydroxide
- Chromium oxide
- Chromium picolinate
- Chromium sulfate
- Chromium trioxide
- Chromone
- Chromophores
- Chronoamperometry
- Chrysin
- Chymosin
- Chymotrypsin
- Chymotrypsinogen
- CI
- Ciclosporin
- CIDNP
- Cidofovir
- Cigarette filters
- Cigarettes
- CIGS
- Cinacalcet
- Cinchonine
- Cinnamaldehyde
- Cinnamic acid
- Cinnamoyl-coa reductase
- Cinnamyl-alcohol dehydrogenase
- Ciprofloxacin
- Circulene
- Circumpolar deep water
- Cis
- Cis-cyclooctene
- Cisplatin
- Citral
- Citric acid
- Citrinin
- Citronellal
- Citronellol
- Citrulline
- Claisen condensation
- Claisen rearrangement
- Claisen-Schmidt condensation
- Clarithromycin
- Clark electrode
- Clathrate compounds
- Clathrate hydrates
- Claus process
- Cleaning agent
- Click chemistry
- Clofazimine
- Clofibric acid
- Clopyralid
- Clothes dryer
- Clothianidin
- Cloud point
- Clover
- CMC
- CNG
- Cnoidal waves
- Coacervates
- Coal analysis
- Coal gas
- Coal gasification
- Coal oil
- Coalbed methane
- Coalescence
- Coalescer
- Coastal flooding
- Cobalt
- Cobalt acetate
- Cobalt blue
- Cobalt ferrite
- Cobalt hydroxide
- Cobalt oxalate
- Cobalt oxide
- Cobalt sulfate
- Cobalt sulfide
- Cobalt-60
- Cobalt-chrome
- Cobalt-mediated radical polymerization
- Cobaltocene
- Cocamide DEA
- Cocamidopropyl betaine
- Coccoliths
- Cochineal
- Cocoa butter
- Coconut
- COD
- Coding regions
- coenzyme A
- Coenzyme B
- Coenzyme M
- Coenzyme q10
- COF
- Cofactor f430
- Cofactors
- Coffee
- Coffee beans
- Coffee grounds
- Coffee roasting
- Coffee substitute
- Coffinite
- Cofiring
- Coherent control
- Coiled tubing
- Coke
- Coke strength after reaction
- Coker unit
- Coking
- Cold finger
- Cold trap
- Collagenase
- Collagenase clostridium histolyticum
- Colligative properties
- Collision frequency
- Collision theory
- Collision-induced dissociation
- Collodion
- Colloid mill
- Colloid vibration current
- Colloid-facilitated transport
- Colloidal probe technique
- Colloidal silica
- Colorimetric analysis
- Column chromatography
- Combination drugs
- Combination reaction
- Combined transport
- Combretastatin a-4
- Combustion
- Combustion analysis
- Combustion instability
- Committed step
- Common-ion effect
- Comonomer
- Compacted graphite iron
- Compatibilization
- Competitive inhibition
- Competitive inhibitor
- complementary DNA
- Complex fluids
- Composition B
- Composition C
- Compounding
- Compounds
- Comprehensive two-dimensional gas chromatography
- Compressed hydrogen
- Compressibility factor
- Compressor stations
- Computational chemistry
- Concentrate
- Concentration cell
- Concentration polarization
- Concerted
- Concerted reactions
- Condensate
- Condensation reaction
- Condensed tannins
- Conductometry
- Conflagration
- Conformation
- Congeners
- Congo Red
- Coniferyl alcohol
- Conjugate base
- Conjugated
- Conjugated linoleic acid
- Conjugated system
- Constantan
- Contact process
- Container glass
- Container port
- Container terminal
- Contamination
- Continuous reactors
- Controlled burns
- Controlled radical polymerization
- Controlled release
- Convergent synthesis
- Cool flame
- Coomassie Brilliant Blue
- Cooperative binding
- Coordinate covalent bond
- Coordination cages
- Coordination complex
- Coordination geometry
- Coordination number
- Coordination polymerization
- Coordination polymers
- Coordination sphere
- Copalic acid
- COPD
- Copiapite
- Copolyester
- Copolymers
- Copper
- Copper acetate
- Copper azide
- Copper bromide
- Copper carbonate
- Copper chromite
- Copper cladding
- Copper conductors
- Copper cyanide
- Copper electroplating
- Copper hydroxide
- Copper iodide
- Copper nanoparticles
- Copper naphthenate
- Copper nitrate
- Copper oxide
- Copper phthalocyanine
- Copper selenide
- Copper sulfate
- Copper sulfide
- Copper tape
- Copper toxicity
- Copper wire
- Copper-64
- Copper-copper sulfate electrode
- Copper-tungsten
- Coprecipitation
- Coptisine
- Corannulene
- Corexit
- Corn ethanol
- Coronene
- Corrective and preventive action
- Corrosion
- Corrosion inhibitors
- Corticosterone
- Cosolvent
- Cotinine
- Cotton pad
- Couette flow
- Coulometry
- Coumarin
- Coumarins
- Coumestrol
- Countercurrent distribution
- Counterions
- Coupling reactions
- Covalent bond
- Covalent radius
- Cow dung
- Cowpea
- COX-2 inhibitors
- Cr(CO)6
- Cracking
- Cream
- Creaming
- Creatinase
- Creatine
- Creosote
- Criegee intermediates
- CRISPR RNA
- Critical relative humidity
- Crocin
- Cross sea
- Cross-coupling reactions
- Cross-flow filtration
- Cross-linked
- Cross-linked enzyme aggregate
- Cross-reactivity
- Crossed molecular beam
- Crosslinking of DNA
- Crown ethers
- Crown glass
- Crude oil washing
- Cryogenic fuel
- Cryptands
- Cryptomelane
- Crystal chemistry
- Crystal structure prediction
- Crystal violet
- Crystallization
- CSTR
- CTD
- Cucurbituril
- Cullet
- Cumene
- Cumene hydroperoxide
- Cumulene
- Cunningham correction factor
- Cupferron
- Cuprates
- Cupronickel
- Curcumin
- Cure
- Curing
- Curium
- Curtius rearrangement
- Cutin
- Cutinase
- Cuvettes
- Cyanamide
- Cyanate
- Cyanate ester
- Cyanation
- Cyanide
- Cyanine
- Cyano radical
- Cyanoacrylate
- Cyanocobalamin
- Cyanoethylation
- Cyanogen
- Cyanogen bromide
- Cyanogen chloride
- Cyanohydrins
- Cyanotoxins
- Cyanuric acid
- Cyanuric chloride
- Cyclam
- Cyclamate
- Cyclic compound
- Cyclic olefin copolymer
- Cyclic voltammetry
- Cycloaddition
- Cycloalkanes
- Cycloalkenes
- Cyclobutadiene
- Cyclobutane
- Cyclodextrin
- Cycloheptane
- Cycloheptatriene
- Cyclohexane
- Cyclohexanecarboxylic acid
- Cyclohexanedimethanol
- Cyclohexanol
- Cyclohexanone
- Cyclohexanone oxime
- Cyclohexene
- Cyclohexene oxide
- Cyclohexylbenzene
- Cycloisomerization
- Cyclone
- Cyclooctadiene
- Cyclooctatetraene
- Cyclooctene
- Cycloparaphenylene
- Cyclopentadiene
- Cyclopentadienyl radical
- Cyclopentane
- Cyclopentanol
- Cyclopentanone
- Cyclopentene
- Cyclopentenone
- Cyclopentyl methyl ether
- Cyclophane
- Cyclophosphamide
- Cyclopropanation
- Cycloserine
- Cyfluthrin
- Cylindrospermopsin
- Cymene
- Cyp17a1
- Cyp1a1
- CYP1A2
- Cyp1b1
- Cyp2c19
- Cyp2d6
- Cyp2e1
- CYP3A
- Cyp3a4
- Cypermethrin
- Cyproconazole
- Cysteamine
- Cysteic acid
- Cysteine dioxygenase
- Cysteine protease
- Cysteine synthase
- Cystine
- Cytidine deaminase
- Cytidine diphosphate
- Cytidine monophosphate
- Cytochalasin
- cytochalasin B
- cytochalasin D
- Cytochrome c peroxidase
- Cytochrome p450
- Cytochrome p450 reductase
- Cytosine deaminase
- CZT
- CZTS
- D-amino acids
- D-block
- D-dopa
- D-galacturonic acid
- Dabco
- Dacron
- Daidzein
- Daidzin
- Dalton
- Dalton's law
- Dangerous goods
- Dansyl chloride
- DAPI
- Daunorubicin
- DCMU
- DCVG
- DDT
- De novo peptide sequencing
- De-asphalting
- Dead zones
- DEAE
- Dealkalization
- Deamidation
- Dean-Stark apparatus
- Decaborane
- Decabromodiphenyl ether
- Decaffeination
- Decalin
- Decamethylcyclopentasiloxane
- Decamethylferrocene
- Decane
- Decantation
- Decarbonylation
- Decarboxylation
- Decene
- Decenoic acid
- Decoction
- Decompression
- Decompression sickness
- Deep eutectic solvent
- Deep-cycle battery
- Deepwater drilling
- DEET
- Deflagration
- Deflagration to detonation transition
- Defoamer
- Degassed water
- Degassing
- Degree of polymerization
- Dehalogenation
- Dehydration reaction
- Dehydroascorbic acid
- Dehydrogenase
- Dehydrogenation
- Dehydrohalogenation
- Deiodinase
- Deionized water
- Delocalized
- Delta-aminolevulinic acid dehydratase
- Deltamethrin
- Demethylase
- Demeton-s-methyl
- Demister
- Demulsifiers
- Dendrimers
- Dendronized polymers
- Denileukin diftitox
- Denitrification
- Denticity
- Deoxyadenosine
- Deoxycytidine
- Deoxygenation
- Deoxyguanosine
- Deoxyribonuclease
- deoxyribonuclease I
- Deoxyribozymes
- Dependency
- Depletion force
- Depolarizer
- Depolymerization
- Depressants
- Deprotonation
- Depth of discharge
- Derivatization
- Derjaguin approximation
- Dermatan sulfate
- Desalter
- Descaling agent
- Descriptors
- Desiccants
- Desiccator
- Desorption
- Desorption electrospray ionization
- Dess-Martin periodinane
- Desulfurization
- Detection limit
- Detergent
- Detonating cord
- Detonation
- Detonation nanodiamond
- Detonation velocity
- Detonation wave
- Dexamethasone
- Dextrin
- Diacetyl
- Diacetylene
- Diacylglycerol
- Diadinoxanthin
- Diafiltration
- Diagonal relationship
- Diallyl disulfide
- Diamantane
- Diamines
- Diaminopimelic acid
- Diammonium phosphate
- Diamondoids
- Dianion
- Diarylethene
- Diastase
- Diastereomers
- Diatomic
- Diatomic molecules
- Diazinon
- Diazo
- Diazodinitrophenol
- Diazomethane
- Diazonium salts
- Diazotrophs
- Dibenzofuran
- Dibenzothiophene
- Dibenzylideneacetone
- Diborane
- Dibromochloromethane
- Dibromomethane
- Dibutyl ether
- Dibutyl phthalate
- Dibutyl sebacate
- Dibutyltin dilaurate
- Dicalcium phosphate
- Dicamba
- Dicarbonyl
- Dicarboxylic acids
- Dichloramine
- Dichloroaniline
- Dichlorobenzene
- Dichlorocarbene
- Dichlorodifluoromethane
- Dichlorodiphenyldichloroethylene
- Dichloroethene
- Dichlorofluoromethane
- Dichloromethane
- Dichloromethyl methyl ether
- Dichlorophenol
- Dichlorophenolindophenol
- Dichlorvos
- Dicofol
- Dicoumarol
- Dicumyl peroxide
- Dicyclohexylamine
- Dicyclohexylcarbodiimide
- Dicyclohexylurea
- Dicyclopentadiene
- Die swell
- Dieldrin
- Dielectrophoresis
- Diels-Alder reaction
- Dienes
- Diepoxybutane
- Diesel fuel
- Diethanolamine
- Diethyl azodicarboxylate
- Diethyl ether
- Diethyl malonate
- Diethyl phthalate
- Diethyl pyrocarbonate
- Diethyl sulfate
- Diethylamine
- Diethylaniline
- Diethylbenzenes
- Diethylene glycol
- Diethylene glycol dinitrate
- Diethylenetriamine
- Diethylformamide
- Diethylzinc
- Differential capacitance
- Diffusion flame
- Diffusion-controlled reaction
- Difluorocarbene
- Difluoromethane
- Digallic acid
- Digester
- Digestive enzymes
- Diglycerides
- Diglycidyl ether
- Diglyme
- Digoxin
- Dihydrofolate reductase
- Dihydrokavain
- Dihydrolipoamide
- Dihydrolipoic acid
- Dihydropteroate synthase
- Dihydroxyacetone
- Dihydroxyacetone phosphate
- Dihydroxybenzenes
- Dihydroxylation
- Diimide
- Diimine
- Diiodomethane
- Diisobutyl phthalate
- Diisodecyl phthalate
- Diisononyl phthalate
- Diisopropyl ether
- Diisopropylamine
- Diketones
- Dilbit
- Diluent
- Dimedone
- Dimerization
- Dimers
- Dimethoate
- Dimethoxyethane
- Dimethyl carbonate
- Dimethyl disulfide
- Dimethyl ether
- Dimethyl fumarate
- Dimethyl methylphosphonate
- Dimethyl phthalate
- Dimethyl selenide
- Dimethyl sulfide
- Dimethyl sulfoxide
- Dimethyl terephthalate
- Dimethylacetamide
- Dimethylallyl pyrophosphate
- Dimethylamine
- Dimethylaniline
- Dimethyldithiocarbamate
- Dimethylformamide
- Dimethylglycine
- Dimethylglyoxime
- Dimethylhydrazine
- Dimethylurea
- Dinitroaniline
- Dinitrogen pentoxide
- Dinitrogen tetroxide
- Dinitrotoluene
- DINP
- Dioctyl adipate
- Dioctyl sebacate
- Diols
- Diosgenin
- Dioxane
- Dioxin
- Dioxins
- Dioxins and dioxin-like compounds
- Dioxolane
- Dioxygen
- Dioxygenase
- Dipamp
- Dipeptidyl peptidase
- Diphenyl carbonate
- Diphenyl ether
- Diphenylalanine
- Diphenylamine
- Diphenylketene
- Diphenylmethane
- Diphosphine
- Dipicolinic acid
- Dipyridamole
- Diquat
- Diradicals
- Direct analysis in real time
- Direct reduction
- Direct-current plasma
- Directing groups
- Directionality
- Discharge coefficient
- Discovery of graphene
- Discovery Studio
- Disjoining pressure
- Dismutase
- Disodium phosphate
- Dispersants
- Disperse dyes
- Dispersion
- Dispersity
- Displacement
- Displacement chromatography
- Dissociation constant
- Dissociation rate
- Dissolution
- Dissolution testing
- Distillate
- Distillation
- Distillation columns
- Distilled water
- Distribution law
- Disulfide
- Disulfiram
- Diterpenes
- Dithiane
- Dithiocarbamates
- Dithiol
- Dithionite
- Dithiothreitol
- Dithizone
- Dityrosine
- Diuron
- Divalent
- Divinyl ether
- Divinylbenzene
- DLC
- DLS
- DLVO theory
- DMAP
- DMDM hydantoin
- DMol3
- DNA
- DNA damage
- DNA glycosylase
- DNA ligase
- DNA methylation
- DNA methyltransferase
- DNA mismatch repair
- DNA oxidation
- DNA polymerase
- DNA polymerase I
- DNA repair
- DNA sequence
- DNA sequencer
- DNA shuffling
- DNA-PKcs
- DNAPL
- DNase
- DOC
- Docetaxel
- Docosahexaenoic acid
- Dodecane
- Dodecanol
- Dodecylbenzene
- Domoic acid
- Donnan potential
- Donor number
- Dopachrome
- Dopamine agonists
- Dopamine antagonists
- Dosage form
- Dose
- Dosing
- Dota-tate
- Double bond
- Double diffusive convection
- Double layer
- Double layer forces
- Double minutes
- Double salts
- Doubly ionized oxygen
- Doubly labeled water
- Downstream
- Downstream processing
- DPPH
- Dragon kiln
- Drain
- Drainage
- DRI
- Drift ice
- Drill string
- Drinking water
- Drop impact
- Dropping funnel
- Drug delivery to the brain
- Drug development
- Drug discovery
- Drug injection
- Drug overdose
- Drug repositioning
- Drug resistance
- Drugs
- Dry cell
- Dry gas
- Dry water
- Drying oil
- Drying tube
- DSS
- DTA
- Dual phase steel
- Dumas method
- Duralumin
- Durene
- Dye tracing
- Dyeing
- Dyes
- Dynamic covalent chemistry
- Dynamic equilibrium
- Dynamic pressure
- Dynamin
- Dysprosium
- E-64
- E-diesel
- E85
- EC meter
- ECD
- Ecdysone
- Ecdysteroids
- Echinenone
- Ecology
- Econazole
- Ecorv
- Ecotoxicology
- Ectonucleotidase
- Eddies
- EDDS
- Eddy
- Eddy diffusion
- EDRF
- EDTA
- Effective nuclear charge
- Effervescence
- Effervescent tablets
- Effusion
- EGTA
- EI
- Einsteinium
- Eka
- Ekman spiral
- Ekman transport
- Elastase
- Elastin-like polypeptides
- Electric battery
- Electric vehicle battery
- Electrical double layer
- Electrical steel
- Electro-osmosis
- Electroanalytical methods
- Electrocatalysts
- Electrochemical energy conversion
- Electrochemical engineering
- Electrochemical equivalent
- Electrochemical fluorination
- Electrochemical migration
- Electrochemical noise
- Electrochemical reduction of carbon dioxide
- Electrochemical regeneration
- Electrochemical series
- Electrochemical window
- Electrochemistry
- Electrochlorination
- Electrode
- Electrode potential
- Electrodeionization
- Electrodialysis
- Electrofiltration
- Electrofuel
- Electrokinetic phenomena
- Electroless copper plating
- Electroless deposition
- Electroless plating
- Electrolysed water
- Electrolysis
- Electrolysis of water
- Electrolytes
- Electrolytic cells
- Electrolytic iron
- Electrolytic process
- Electrometallurgy
- Electromethanogenesis
- Electron affinity
- Electron counting
- Electron transfer
- Electron-deficient
- Electron-rich
- Electron-withdrawing
- Electron-withdrawing group
- Electronegativity
- Electroneutrality
- Electronic cigarette
- Electronic effects
- Electronic properties
- Electrophiles
- Electrophilic addition
- Electrophilic aromatic substitution
- Electrophilic substitution
- Electrophoresis
- Electrophoretic light scattering
- Electropolishing
- Electrospray ionization
- Electrostatic separator
- Electrosynthesis
- Electrowinning
- Elektron
- Elemental analysis
- Elementary reaction
- Elementary step
- Elgiloy
- Elimination
- Elimination reaction
- Ellagic acid
- Ellagitannin
- Ellman's reagent
- Elution
- Elutriation
- Embrittlement
- Emergency management
- Empirical formula
- Emu oil
- Emulsified fuel
- Emulsion dispersion
- Emulsion polymerization
- Emulsions
- EN 590
- Enamine
- Enantiomeric excess
- Enantiomers
- End correction
- End group
- End-to-end distance
- Endcapping
- Endergonic
- Endocrine disruptors
- Endonucleases
- Endopeptidase
- Endorphins
- Endosulfan
- Endothall
- Endothelin 1
- Endothermic
- Endothermic gas
- Endothermic process
- Endrin
- Ene reaction
- Energy cascades
- Energy drinks
- Energy levels
- Energy profile
- Energy supply
- Enflurane
- Enkephalin
- Enol
- Enolates
- Enones
- Enoyl-CoA hydratase
- Enteric coating
- Enterobactin
- Enterolactone
- Entrainment
- Entrance length
- Entropy of activation
- Environmental analysis
- Environmental chemistry
- Environmental health criteria
- Environmental toxicology
- Enyne metathesis
- Enzyme
- Enzyme activators
- Enzyme kinetics
- EOR
- Ephedrine
- Epichlorohydrin
- Epigallocatechin gallate
- Epimers
- Epoxide hydrolase
- Epoxides
- Epoxidized soybean oil
- Epoxy
- Equatorial waves
- Equilibrium
- Equilibrium constant
- Equilibrium fractionation
- Equilin
- Equivalence point
- Equivalent carbon content
- Equivalent concentration
- Erbium
- Erbium oxide
- Ergosterol
- Ergot
- Ergovaline
- Ergun equation
- Eriochrome black T
- Eriodictyol
- Erlenmeyer flasks
- Erythritol
- Erythrosine
- Espresso
- Essential amino acids
- Essential fatty acids
- Essential medicines
- Esterases
- Esters
- Estragole
- Estrane
- Estriol
- ETBE
- Ethambutol
- Ethane
- Ethanol
- Ethanol fuel
- Ethanol metabolism
- Ethanolamine
- Ethephon
- Ether
- Ethidium bromide
- Ethinylestradiol
- Ethion
- Ethoxylation
- Ethyl
- Ethyl acetate
- Ethyl acetoacetate
- Ethyl acrylate
- Ethyl benzoate
- Ethyl butyrate
- Ethyl carbamate
- Ethyl cellulose
- Ethyl cyanoacrylate
- Ethyl formate
- Ethyl group
- Ethyl iodide
- Ethyl lactate
- Ethyl methanesulfonate
- Ethyl oleate
- Ethyl propionate
- Ethyl sulfate
- Ethylamine
- Ethylammonium nitrate
- Ethylbenzene
- Ethylene
- Ethylene carbonate
- Ethylene glycol
- Ethylene glycol dinitrate
- Ethylene oxide
- Ethylene thiourea
- Ethylenediamine
- Ethylenediaminetetraacetic acid
- Ethylidene norbornene
- Ethylmagnesium bromide
- Ethylmercury
- Ethyltoluene
- Ethynyl radical
- Etoposide
- Eucalyptol
- Eucalyptus oil
- Eudiometer
- Eugenol
- Euler equations
- Eulerian
- Europium
- Europium nitrate
- Europium oxide
- Evolved gas analysis
- Exchange current density
- Excimer
- Excipients
- Executive function
- Exergonic reactions
- Exfoliated graphite nanoplatelets
- Exoenzymes
- Exogenous DNA
- Exon
- Exopolyphosphatase
- Exosomes
- Exothermic reaction
- Expanded bed adsorption
- Expiration date
- Explosion vent
- Explosive booster
- Explosive detection
- Explosive lens
- Explosive limit
- Explosives
- Exposure assessment
- Expression cassette
- Extensional viscosity
- Extent of reaction
- Extinction coefficient
- Extracellular signal-regulated kinases
- Extrachromosomal DNA
- Extraction
- Ezh2
- FAB
- Famotidine
- Fanning friction factor
- Faradaic current
- Faraday cup
- Faraday efficiency
- Faraday's laws of electrolysis
- Farinograph
- Farnesene
- Farnesyl pyrophosphate
- Farnesyltransferase
- Fat
- Fat substitutes
- Fatty acid amides
- Fatty acid desaturase
- Fatty acid esters
- Fatty acid methyl ester
- Fatty acid synthase
- Fatty acids
- Fatty alcohols
- Favipiravir
- Favre averaging
- FCS
- Feed additives
- Feedwater pumps
- Fehling's solution
- Femtochemistry
- Fenchone
- Fenitrothion
- Fenpropathrin
- Fenton reaction
- Fenton's reagent
- Fenvalerate
- FEP
- Fermentative hydrogen production
- Fermi gas
- Ferrate
- ferredoxin-NADP(+) reductase
- Ferric
- Ferric ammonium sulfate
- Ferric chloride
- Ferric hydroxide
- Ferric oxalate
- Ferric sulfate
- Ferrichrome
- Ferricyanide
- Ferrihydrite
- Ferrioxalate
- Ferroalloys
- Ferroboron
- Ferrocene
- Ferrocenium
- Ferrocerium
- Ferrochelatase
- Ferrochrome
- Ferrocyanide
- Ferroin
- Ferromanganese
- Ferromolybdenum
- Ferrophosphorus
- Ferroquine
- Ferrosilicon
- Ferrotitanium
- Ferrous
- Ferrous iron
- Ferrovanadium
- Ferroxidase
- Ferulic acid
- Fiber metal laminate
- Fiberglass
- FID
- Field desorption
- Field flow fractionation
- Field-emission electric propulsion
- Filamentous carbon
- Filipin
- Film coating
- Film forming
- Film temperature
- Filter paper
- Filtration
- Fine chemicals
- Finkelstein reaction
- Fipronil
- Fire point
- Fire regime
- Fire triangle
- Fire whirls
- Firefly luciferin
- Fireproofing
- Fires
- Firewood
- Fireworks
- Fischer esterification
- Fischer indole synthesis
- Fischer-Tropsch process
- Fisetin
- FKBP
- FKM
- Flame
- Flame polishing
- Flame retardants
- Flame speed
- Flame tests
- Flammability limit
- Flammable
- Flammable liquid
- Flash evaporation
- Flash fire
- Flash floods
- Flash photolysis
- Flash point
- Flash smelting
- Flashover
- Flavan-3-ol
- Flavanone
- Flavin mononucleotide
- Flavonoid biosynthesis
- Flavonoids
- Flecainide
- Flettner rotor
- Flexible battery
- Flibe
- Flinak
- Flint glass
- FLNG
- Float glass
- Floc
- Flocculation
- Flooding
- Floods
- Flory-Fox equation
- Flow assurance
- Flow batteries
- Flow battery
- Flow coefficient
- Flow conditioning
- Flow focusing
- Flow injection analysis
- Flow measurement
- Flow separation
- Flow visualization
- Flow-accelerated corrosion
- Flucloxacillin
- Flue
- Flue-gas stacks
- Fluid
- Fluid catalytic cracking
- Fluid dynamics
- Fluid parcel
- Fluidics
- Fluidization
- Fluidized bed
- Fluidized bed reactors
- Fluopyram
- Fluoranthene
- Fluorene
- Fluorescamine
- Fluorescein
- Fluorescein isothiocyanate
- Fluorescence
- Fluoride poisoning
- Fluoride selective electrode
- Fluoride therapy
- Fluoride volatility
- Fluorinated gases
- Fluorobenzene
- Fluorocarbons
- Fluoroelastomers
- Fluoroform
- Fluorographene
- Fluorophores
- Fluorophosphate glass
- Fluoropolymers
- Fluorotelomer alcohol
- Fluorotelomers
- Fluorouracil
- Fluoxetine
- Flurbiprofen
- Fluroxypyr
- Flutamide
- Foam fractionation
- Foaming agents
- Folate
- Foldamers
- FOLFIRI
- Folfirinox
- FOLFOX
- Folic acid
- Food chemistry
- Food coloring
- Food energy
- Food engineering
- Food fortification
- Force fields
- Ford viscosity cup
- Formal charge
- Formaldehyde
- Formaldehyde dehydrogenase
- Formamide
- Formate
- Formation fluid
- Formazan
- Formic acid
- Forming gas
- Formula
- Formula unit
- Formulation
- Formvar
- Forskolin
- Fosmidomycin
- Fourier transform ion cyclotron resonance
- Fourier-transform ion cyclotron resonance
- FPLC
- Fractional distillation
- Fractionating column
- Fractionation
- Fragility
- Fragrances
- Frazil ice
- Free base
- Free energy perturbation
- Free molecular flow
- Free radical reaction
- Free radicals
- Free-energy relationship
- Free-radical addition
- Free-radical reaction
- Freebase
- Freeze-thaw
- Freon
- Freshwater ecosystems
- Friction loss
- Fries rearrangement
- Fritted glass
- Frost weathering
- Frosted glass
- Fructose
- FTO gene
- Fucoxanthin
- Fuel
- Fuel gas
- Fuel oil
- Fuel tax
- Fugacity
- Fugacity capacity
- Full configuration interaction
- Fullerene chemistry
- Fulminate
- Fumarate reductase
- Fumaric acid
- Fumed silica
- Fumonisin B1
- Fumonisins
- Functional groups
- Functionality
- Fura-2
- Fura-2-acetoxymethyl ester
- Furan
- Furan resin
- Furanocoumarin
- Furanone
- Furfural
- Furfuryl alcohol
- Furin
- Furnace
- Fused quartz
- Fusel oil
- G-quadruplexes
- G6PD
- GABA
- Gadolinium
- Gadolinium oxide
- Gadolinium oxysulfide
- Gadolinium-doped ceria
- Galactokinase
- Galactose
- Galactose 1-phosphate
- Galactosemia
- Galactosidases
- Galacturonic acid
- Galaxolide
- Galinstan
- Gallic acid
- Gallium
- Gallium arsenide
- Gallium arsenide phosphide
- Gallium fluoride
- Gallium nitrate
- Gallium nitride
- Gallium oxide
- Gallium phosphate
- Gallium phosphide
- Gallium selenide
- Gallocatechin gallate
- Gallotannin
- Galvanic anodes
- Galvanic cells
- Galvanic corrosion
- Galvanic series
- Galvanism
- Galvanization
- Galvanized
- Galvanized steel
- Galvannealed
- Gas burner
- Gas chromatography
- Gas chromatography-mass spectrometry
- Gas composition
- Gas diffusion electrode
- Gas exchange
- Gas explosions
- Gas flare
- Gas generator
- Gas heater
- Gas kinetics
- Gas law
- Gas leaks
- Gas lighter
- Gas meter
- Gas oil ratio
- Gas reinjection
- Gas separation
- Gas thermometer
- Gasohol
- Gasoline
- Gastric acid
- Gasworks
- GC-MS
- GCP
- Gefitinib
- Gel point
- Gelatinase
- Gelatinase A
- Gelation
- Geldanamycin
- Geminal
- Geminal diols
- Generic drugs
- Genetic markers
- Genipin
- Genistein
- Genistin
- Genomic DNA
- Gentisic acid
- Geochemistry
- Geopolymer
- Geopolymer cement
- Geosmin
- Geraniin
- Geraniol
- Geranyl pyrophosphate
- Geranylgeranyl pyrophosphate
- Germane
- Germanene
- Germanium
- Germanium dioxide
- Germanium monoxide
- Germanium telluride
- Germanium tetrachloride
- GGG
- Ghrelin
- Gibberellic acid
- Gibbs isotherm
- Gibbs-Donnan effect
- Gilded
- Gilman reagent
- Gingerol
- Ginkgolide
- GLA
- Glacial stream
- Glacier terminus
- Glaser coupling
- Glass electrode
- Glass fibre
- Glass formation
- Glass melting furnace
- Glass microspheres
- Glass production
- Glass recycling
- Glass rod
- Glass tubes
- Glass wool
- Glass-ceramic
- Glassmaking
- Glassy carbon
- Glaze ice
- Glazing
- Glibenclamide
- Globally Harmonized System of Classification and Labelling of Chemicals
- Glucanase
- Gluconic acid
- Glucono delta-lactone
- Glucose 1-phosphate
- Glucose 6-phosphatase
- Glucose 6-phosphate
- Glucose oxidase
- Glucose-1-phosphate
- Glucose-6-phosphate
- Glucosyltransferase
- Glucuronic acid
- Glucuronosyltransferase
- Glufosinate
- Glutamate
- Glutamate decarboxylase
- Glutamate dehydrogenase
- Glutamic acid
- Glutaminase
- Glutamine
- Glutamine synthetase
- Glutathione
- Glutathione peroxidase
- Glutathione reductase
- Glutathione s-transferase
- Glutathione synthetase
- Glutathione-ascorbate cycle
- Glyceraldehyde 3-phosphate dehydrogenase
- Glyceraldehyde-3-phosphate dehydrogenase
- Glyceric acid
- Glycerin soap
- Glycerol
- Glycerol 3-phosphate
- Glycerol dehydrogenase
- Glycerol kinase
- Glycerol monostearate
- Glycerolysis
- Glycidamide
- Glycidol
- Glycol dehydration
- Glycol distearate
- Glycol ether
- Glycol ethers
- Glyconeogenesis
- Glycosaminoglycan
- Glycoside hydrolase family 13
- Glycosylase
- Glycyrrhizin
- Glyoxal
- Glyoxylic acid
- Glyphosate
- GMP
- Gold
- Gold chloride
- Gold cluster
- Gold cyanidation
- Gold extraction
- Gold halides
- Gold mining
- Gold oxide
- Gold salts
- Gore-Tex
- Gossypol
- GPC
- GPX4
- Graduated cylinder
- Graduated pipette
- Granzyme A
- Granzyme b
- Graphane
- Graphene
- Graphene antenna
- Graphene electronics
- Graphene foam
- Graphene nanoribbons
- Graphene oxide
- Graphene oxide paper
- Graphene plasmonics
- Graphite intercalation compound
- Graphite oxide
- Graphitic carbon nitride
- Graphyne
- Gravimetric analysis
- Gravity currents
- Gravity separation
- Gray iron
- Green chemistry
- Green chemistry metrics
- Green hydrogen
- Green rust
- Green solvent
- Greenland ice sheet
- Grignard reaction
- Grignard reagents
- Griseofulvin
- Grotthuss mechanism
- Ground glass
- Ground glass joint
- Group 12
- Group 13
- Group 4 elements
- Group 7
- Growth hormone deficiency
- GSK-3
- GTL
- GTPases
- Guaiacol
- Guanidine
- Guanidine nitrate
- Guanidinium chloride
- Guanidinium thiocyanate
- Guano
- Guanosine monophosphate
- Guanylate cyclase
- Guar gum
- Guerbet reaction
- Gum
- Gum arabic
- Haber process
- Haematoxylin
- Hafnium
- Hafnium carbide
- Hafnium diboride
- Hafnium oxide
- Hafnium silicate
- Hafnium tetrachloride
- Hairpin
- Half-cells
- Half-reaction
- Halide
- Haloacetic acids
- Haloalkane dehalogenase
- Haloalkanes
- Halocarbons
- Haloclines
- Haloform reaction
- Halogen bond
- Halogenation
- Halogens
- Halomethanes
- Halon
- Haloperoxidases
- Halothane
- HALS
- Hamaker constant
- Hammond's postulate
- Hand dryers
- Hansen solubility parameter
- Hantzsch Pyrrole Synthesis
- Hapticity
- Hard carbon
- Hard engineering
- Hard water
- Hardened steel
- Harmful algal bloom
- Harmonized System
- Hausmannite
- Hazard and operability study
- Hazardous areas
- Hazardous drugs
- Hazardous materials
- Hazwoper
- HCNG
- HDAC1
- HDR
- HDT
- Hearth
- Heat of combustion
- Heat of solution
- Heated glass
- Heating oil
- Heavy crude oil
- Heavy fuel oil
- Heavy water
- Heck reaction
- Hele-Shaw flow
- Helicene
- Heliox
- Helium
- Helium analyzer
- Helium dimer
- Helium-3
- Helium-4
- Hematoxylin
- Heme a
- Heme b
- Heme c
- Heme oxygenase
- Hemiacetal
- Hemiaminal
- Hemihydrate
- Hemin
- Hemofiltration
- Henna
- Henry Hub
- Henry reaction
- Henry's Law
- Heparan sulfate
- Heparin
- HEPES
- Hephaestin
- Heptacene
- Heptachlor
- Heptanal
- Heptane
- Heptanol
- HER
- Hesperetin
- Hesperidin
- Heteroatoms
- Heterocyclic
- Heterocyclic compounds
- Heterocysts
- Heterogeneous
- Heterogeneous catalyst
- Heterogeneous combustion
- Heterolysis
- Heteronuclear molecule
- Heteropoly acid
- Heterotrimeric G proteins
- Heusler compounds
- Hexabenzocoronene
- Hexabromocyclododecane
- Hexachlorobenzene
- Hexachlorobutadiene
- Hexachlorocyclohexane
- Hexachloroethane
- Hexadecane
- Hexadentate ligand
- Hexafluoride
- Hexafluoro-2-propanol
- Hexafluorobenzene
- Hexafluorophosphate
- Hexafluoroplatinate
- Hexafluoropropylene
- Hexafluoropropylene oxide
- Hexagonal phase
- Hexamethylene diisocyanate
- Hexamethylenediamine
- Hexamethylenetetramine
- Hexamine
- Hexanal
- Hexane
- Hexanitrostilbene
- Hexanol
- Hexavalent chromium
- Hexene
- Hexokinase
- HF
- High pressure jet
- High production volume chemicals
- High spin
- High-energy phosphate
- High-entropy alloy
- High-entropy alloys
- High-field asymmetric-waveform ion-mobility spectrometry
- High-pressure chemistry
- High-speed steel
- High-strength low-alloy steel
- High-temperature corrosion
- High-temperature electrolysis
- Higher alkanes
- Higher power
- Hildebrand solubility parameter
- Hill equation
- Hippuric acid
- Histamine
- Histidine kinase
- Histone acetyltransferase
- Histone deacetylase
- Histone deacetylase inhibitor
- Histone methyltransferase
- HLB
- HMG-CoA
- HMG-CoA reductase
- HMX
- Hofmeister series
- Hollow fiber membrane
- Holmium
- Holmium oxide
- Homoarginine
- Homochirality
- Homocysteine
- Homogeneity
- Homogeneous
- Homogeneous catalysis
- Homoleptic
- Homologous series
- Homologues
- Homolysis
- Homonuclear
- Homoserine kinase
- Homovanillic acid
- Honokiol
- Hookah
- Hopane
- Hopcalite
- HOPG
- Hormone-sensitive lipase
- Hot atom
- Hot corrosion
- Hot-dip galvanization
- HPLC
- HPTLC
- HSAB theory
- HTHA
- HTP
- HTPB
- Human right to water and sanitation
- Humic acid
- Humic substances
- Humulene
- HVO
- Hyaluronan synthase
- Hyaluronic acid
- Hyaluronidase
- Hydantoin
- Hydralazine
- Hydrate
- Hydration
- Hydration energy
- Hydration number
- Hydraulic containment
- Hydraulic jump
- Hydrazide
- Hydrazine
- Hydrazine sulfate
- Hydrazines
- Hydrazinium
- Hydrazoic acid
- Hydrazones
- Hydrides
- Hydrobromide
- Hydrocarbon mixtures
- Hydrocarbons
- Hydrochloric acid
- Hydrochloric acid regeneration
- Hydrochloride
- Hydrodealkylation
- Hydrodenitrogenation
- Hydrodeoxygenation
- Hydrodesulfurization
- Hydrodynamic stability
- Hydroelasticity
- Hydrofluoric acid
- Hydrofluorocarbons
- Hydrofluoroolefin
- Hydroformylation
- Hydrogel fiber
- Hydrogels
- Hydrogen analyzer
- Hydrogen atom
- Hydrogen bonds
- Hydrogen bromide
- Hydrogen chloride
- Hydrogen damage
- Hydrogen disulfide
- Hydrogen economy
- Hydrogen embrittlement
- Hydrogen halides
- Hydrogen infrastructure
- Hydrogen iodide
- Hydrogen ions
- Hydrogen molecular ion
- Hydrogen peroxide
- Hydrogen production
- Hydrogen purity
- Hydrogen spillover
- Hydrogen station
- Hydrogen storage
- Hydrogen sulfide
- Hydrogen transport
- Hydrogen vehicles
- Hydrogen-donor solvent
- Hydrogenase
- Hydrogenation
- Hydrogenolysis
- Hydrolases
- Hydrolysable tannin
- Hydrolysis
- Hydrolysis constant
- Hydrolyzed protein
- Hydrometallurgy
- Hydrometer
- Hydron
- Hydronium
- Hydroperoxides
- Hydroperoxyl
- Hydrophile
- Hydrophilic
- Hydrophilic interaction chromatography
- Hydrophobic
- Hydrophobic effect
- Hydrophobic silica
- Hydroprocessing
- Hydroquinone
- Hydrosilylation
- Hydrothermal liquefaction
- Hydrothermal synthesis
- Hydrotrope
- Hydrous oxide
- Hydroxamic acid
- Hydroxides
- Hydroxy group
- Hydroxy ketones
- Hydroxyacetone
- Hydroxybenzotriazole
- Hydroxybutyric acid
- Hydroxycarboxylic acids
- Hydroxychloroquine
- Hydroxycinnamic acid
- Hydroxyl
- Hydroxyl radicals
- Hydroxyl value
- Hydroxyl-terminated polybutadiene
- Hydroxylamine
- Hydroxylamine oxidoreductase
- Hydroxylammonium nitrate
- Hydroxylation
- Hydroxylysine
- Hydroxymethylfurfural
- Hydroxyproline
- Hydroxypropyl cellulose
- Hydroxysteroids
- Hydroxytyrosol
- Hyoscyamine
- Hyperbaric chamber
- Hyperconjugation
- Hypergolic
- Hypergolic propellant
- Hyperoxia
- Hyperuricemia
- Hypervalent
- Hypobromite
- Hypobromous acid
- Hypochlorite
- Hypochlorous acid
- Hypohalous acid
- Hyponatremia
- Hypophosphorous acid
- Hypoxanthine
- IACS
- Ibuprofen
- Ice caps
- Ice cores
- Ice crystal
- Ice crystals
- ice Ih
- Ice II
- Ice jam
- Ice pigging
- Ice sheets
- Ice shelf
- ice VII
- Icebergs
- Icephobic
- Icephobicity
- ICP-MS
- ICP-OES
- Ideal electrode
- Ideal gas
- Ideal gas law
- Ideal solution
- IEC 62196
- Igepal ca-630
- Ignite
- Igniter
- Imatinib
- Imbibition
- IMES
- Imidazolate
- Imidazole
- Imidazolidine
- Imidazolines
- Imides
- Imines
- Iminium
- Iminodiacetic acid
- Immobilized enzymes
- immobilized pH gradient
- Impact pressure
- Implicit solvation
- Impurities
- Impurity
- In silico
- In situ polymerization
- Incipient wetness impregnation
- Inclusion compounds
- Incoloy
- Incompatible elements
- Inconel
- Inconel 625
- Indazole
- Indene
- Indigo
- Indigo carmine
- Indigo dye
- Indirect DNA damage
- Indium
- Indium antimonide
- Indium arsenide
- Indium gallium arsenide
- Indium gallium nitride
- Indium gallium phosphide
- Indium iodide
- Indium nitride
- Indium oxide
- Indium phosphide
- Indium selenide
- Indium sulfate
- Indium sulfide
- Indium-111
- Indocyanine green
- Indole
- Indole-3-acetic acid
- Indole-3-butyric acid
- Indometacin
- Indomethacin
- Indophenol
- Indoxyl
- Induction furnace
- Induction period
- Inductive effect
- Inductively coupled plasma atomic emission spectroscopy
- Inductively coupled plasma mass spectrometry
- Industrial furnaces
- Industrial gas
- Industrial process control
- Inert
- Inert gases
- Inflatable
- Infragravity waves
- Infrared multiphoton dissociation
- InGaAs
- InGaAsP
- InGaN
- InGaP
- Inhalants
- Inherent chirality
- Inherent safety
- Initiation
- Injector
- Inner sphere complex
- Inner sphere electron transfer
- Inorganic chemistry
- Inorganic compounds
- Inorganic ions
- Inorganic polymers
- Inosine monophosphate
- Inositol
- Inositol phosphate
- Inositol phosphate metabolism
- Inositol trisphosphate
- Insect repellents
- Insertion reactions
- Instant coffee
- Instrumental analysis
- Insulin receptor substrate
- Integrated Risk Information System
- Intercalation
- Interfacial polymerization
- Intergranular corrosion
- Intermediates
- Intermetallic
- Internal standard
- Internal waves
- Interpenetrating polymer network
- Interstellar ice
- Interstitial collagenase
- Intramolecular
- Intramolecular forces
- Intramolecular vibrational energy redistribution
- Intranasal
- Intrathecal
- Intrinsic activity
- Intrinsic viscosity
- Introns
- Invar
- Inverse gas chromatography
- Inverse photoemission spectroscopy
- Invertase
- Inviscid flow
- Iodate
- Iodine deficiency
- Iodine monochloride
- Iodine number
- Iodine value
- Iodine-131
- Iodoacetamide
- Iodobenzene
- Iodoform
- Iodomethane
- Iodometry
- Iohexol
- Ion
- Ion association
- Ion beam mixing
- Ion chromatography
- Ion exchange
- Ion exchange chromatography
- Ion funnel
- Ion mobility spectrometry
- Ion plating
- Ion selective electrode
- Ion source
- Ion speciation
- Ion transport number
- Ion trap
- Ion-exchange membranes
- Ion-exchange resin
- Ion-selective electrode
- Ionic
- Ionic atmosphere
- Ionic compounds
- Ionic liquids
- Ionic potential
- Ionic radius
- Ionic strength
- Ionic transfer
- Ionomers
- Ionone
- Iopromide
- Irbesartan
- Iridium
- Iridium oxide
- Iridium-192
- IRMS
- Iron
- Iron aluminide
- Iron boride
- Iron carbonate
- Iron chloride
- Iron chromite
- Iron compounds
- Iron fluoride
- Iron group
- Iron hydroxide
- Iron nitride
- Iron oxide
- Iron oxide cycle
- Iron oxide nanoparticles
- Iron pentacarbonyl
- Iron phosphate
- Iron phosphide
- Iron poisoning
- Iron powder
- Iron-56
- Iron-sulfur cluster
- Iron(ii) oxide
- Iron(ii) sulfate
- Iron(iii) oxide
- Iron(iii) phosphate
- Irrigation
- Isatin
- Isethionic acid
- ISFET
- Isoamyl acetate
- Isoamyl alcohol
- Isoamylase
- Isobaric tag for relative and absolute quantitation
- Isobutane
- Isobutyl acetate
- Isobutylene
- Isobutyraldehyde
- Isobutyric acid
- Isobutyronitrile
- Isocitrate dehydrogenase
- Isocitrate lyase
- Isocyanate
- Isocyanide
- Isodesmosine
- Isoelectric point
- Isoelectronic
- Isoflavones
- Isoflurane
- Isoionic point
- Isomaltase
- Isomerases
- Isomerization
- Isomers
- Isoniazid
- Isooctane
- Isopentane
- Isophorone
- Isophorone diisocyanate
- Isophthalic acid
- Isopimaric acid
- Isoprene
- Isopropyl
- Isopropyl acetate
- Isopropyl alcohol
- Isopropyl myristate
- Isopropyl palmitate
- Isopropylamine
- Isoquinoline
- Isosorbide
- Isothiocyanates
- Isotope fractionation
- Isotopes of helium
- Isotopes of iodine
- Isotopes of lithium
- Isotopes of oxygen
- Isotopes of sulfur
- Isotopes of thorium
- Isotopomers
- Isovaleraldehyde
- Isoxazole
- Isozymes
- Itaconic acid
- ITO
- IUPAC names
- IUWM
- Jacobsen's catalyst
- Jameson Cell
- Janus kinase
- Jasmonates
- Jasmonic acid
- Jet aerators
- Jet fires
- Jet fuel
- Juglone
- K-epsilon turbulence model
- Kaempferol
- Kahweol
- Kallikrein
- Kanthal
- Karl Fischer titration
- Kava
- Kavalactones
- kDa
- Keggin structure
- Kelvin equation
- Keratinase
- Kermes
- Kerosene
- Ketene
- Keto acids
- Ketone bodies
- Ketones
- Ketonization
- Ketoprofen
- Ketorolac
- Ketoses
- Ketosteroids
- Ketyl
- Kiln
- Kinase
- Kinematic wave
- Kinetic control
- Kinetic fractionation
- Kinetic isotope effect
- Kinetic resolution
- Kinetics
- Kinetin
- Kjeldahl method
- Knoevenagel condensation
- Knudsen equation
- Knudsen layer
- Kojic acid
- Kola nut
- Koopmans' theorem
- Kosmotropic
- Kovac's reagent
- Kovar
- Krafft temperature
- Kraft process
- Kraton
- Kroll process
- Krypton
- Kt
- Kutta condition
- L-DOPA
- L-glucose
- Labdane
- Labile
- Lability
- Laboratory flasks
- Laboratory glassware
- Laccase
- Lacquer thinner
- Lactaldehyde
- Lactams
- Lactase
- Lactic acid
- Lactide
- Lactobionic acid
- Lactones
- Lactoperoxidase
- Lagrangian particle tracking
- LAH
- LAL
- Laminar flame speed
- Laminar flow reactor
- Laminated glass
- LAMMPS
- Langasite
- Langbeinite
- Langmuir
- Langmuir adsorption model
- Lanosterol
- Lanthanide contraction
- Lanthanides
- Lanthanum
- Lanthanum aluminate
- Lanthanum bromide
- Lanthanum hexaboride
- Lanthanum hydroxide
- Lanthanum manganite
- Lanthanum oxide
- Lanthanum-140
- Latent heat
- Latrunculin
- Lauric acid
- Laurolactam
- Laves phases
- Law of mass action
- Law of multiple proportions
- Law of the wall
- Lawrencium
- Layered materials
- LBE
- LC-MS
- LDPE
- Le Chatelier's principle
- Lead abatement
- Lead arsenate
- Lead azide
- Lead carbonate
- Lead chloride
- Lead chromate
- Lead citrate
- Lead compounds
- Lead dioxide
- Lead glass
- Lead iodide
- Lead magnesium niobate
- Lead oxide
- Lead phosphate
- Lead poisoning
- Lead selenide
- Lead smelting
- Lead sulfate
- Lead tin telluride
- Lead titanate
- Lead zirconate titanate
- Lead-210
- Lead-acid batteries
- Lead-acid battery
- Lead(ii) acetate
- Lead(ii) oxide
- Leak detection
- Leaving group
- Leblanc process
- Lecithin
- Ledinegg instability
- Leghemoglobin
- Lehr
- LEIS
- Lennard-Jones potential
- Lentinan
- LES
- Lestaurtinib
- Leuco dyes
- Leveling effect
- Levocetirizine
- Levofloxacin
- Levoglucosan
- Levopimaric acid
- Levulinic acid
- Lewis acids
- Licorice
- Lidocaine
- Liebig condenser
- Liesegang rings
- Ligands
- Ligase chain reaction
- Ligases
- Light crude oil
- Light metals
- Light-dependent reactions
- Lightfastness
- Lignan
- Lignin
- Lignin peroxidase
- Lignosulfonates
- Lime sulfur
- Limewater
- Limiting oxygen concentration
- Limiting reagent
- Limnology
- Limonene
- Limonoids
- Linalool
- Linalyl acetate
- Linamarase
- Lindane
- Linear combination of atomic orbitals
- Linear ion trap
- Linear low-density polyethylene
- Linear sweep voltammetry
- Linoleic acid
- Linolenic acid
- Linseed oil
- Linuron
- Lipase
- Lipid polymorphism
- Lipoic acid
- Lipophilic
- Lipophilicity
- Lipoprotein lipase
- Lipoteichoic acid
- Lipoxygenase
- Liquefaction of gases
- Liquid bleach
- Liquid carbon dioxide
- Liquid chromatography-mass spectrometry
- Liquid fuel
- Liquid hydrogen
- Liquid junction potential
- Liquid metal
- Liquid nitrogen
- Liquid organic hydrogen carriers
- Liquid oxygen
- Liquid scintillation counting
- Liquid smoke
- Liquid-liquid extraction
- Liquid-to-gas ratio
- Liquorice
- Lithium
- Lithium 12-hydroxystearate
- Lithium amide
- Lithium bicarbonate
- Lithium borate
- Lithium borohydride
- Lithium carbonate
- Lithium chloride
- Lithium cobalt oxide
- Lithium diisopropylamide
- Lithium disilicate
- Lithium fluoride
- Lithium hexafluorophosphate
- Lithium hydroxide
- Lithium iron phosphate
- Lithium iron phosphate battery
- Lithium metaborate
- Lithium metal batteries
- Lithium nickel manganese cobalt oxide
- Lithium nitrate
- Lithium nitride
- Lithium oxide
- Lithium perchlorate
- Lithium peroxide
- Lithium polymer battery
- Lithium soap
- Lithium stearate
- Lithium sulfate
- Lithium sulfide
- Lithium tantalate
- Lithium titanate
- Lithium triborate
- Lithium triflate
- Lithium tungstate
- Lithium-6
- Lithium-air battery
- Lithium-ion battery
- Lithium-titanate battery
- Lithocholic acid
- Lithophile
- Litmus
- Living polymerization
- LMIS
- LNG
- Locoweed
- Locust bean gum
- Lone pairs
- Low-density polyethylene
- Low-iron glass
- Low-pressure area
- Lower flammability limit
- Lower flammable limit
- LSCF
- LSM
- Lubrication theory
- Lubricity
- Luggin capillary
- Luminol
- Lutein
- Luteolin
- Lutetium
- Lutetium-177
- Lutidine
- LWD
- Lyases
- Lycopene
- Lye
- Lysine
- Lysostaphin
- Lysozyme
- Lysyl oxidase
- Lyxose
- M-cresol
- M-phenylenediamine
- M-terphenyl
- M6G
- Mackinawite
- Macrocycles
- Macrocyclic
- Macrocyclic ligand
- Macrolides
- Macromolecules
- Macromonomers
- Madelung constant
- Magnalium
- Magnesium
- Magnesium alloy
- Magnesium bicarbonate
- Magnesium bromide
- Magnesium carbonate
- Magnesium chloride
- Magnesium citrate
- Magnesium deficiency
- Magnesium diboride
- Magnesium fluoride
- Magnesium hydride
- Magnesium hydroxide
- Magnesium nitrate
- Magnesium perchlorate
- Magnesium peroxide
- Magnesium phosphate
- Magnesium silicide
- Magnesium stearate
- Magnesium sulfate
- Magnesium sulfite
- Magnetic alloys
- Magnetic flow meter
- Magnetic isotope effect
- Magnus effect
- Maillard reaction
- Main group
- Main-group elements
- Malaoxon
- Malate dehydrogenase
- Malathion
- MALDI
- Maleic acid
- Maleic anhydride
- Maleimide
- Malic acid
- Malondialdehyde
- Malonic acid
- Maltase
- Maltitol
- Mancozeb
- Mandelic acid
- Mandelonitrile
- Manganate
- Manganese
- Manganese carbonate
- Manganese chloride
- Manganese deficiency
- Manganese dioxide
- Manganese hydroxide
- Manganese oxide
- Manganese peroxidase
- Manganese steel
- Manganese sulfate
- Manganese-56
- Manganese(ii) chloride
- Manganin
- Manganism
- Mangiferin
- Mannich bases
- Mannich reaction
- Mannitol
- Mannose
- Mannuronic acid
- MAPK
- MAPKK
- Maple
- Maraging steel
- Marcasite
- Marcus theory
- Marine diesel oil
- Marine ecosystem
- Maritime security
- Mark-Houwink equation
- Markstein number
- Marsh gas
- Marsh test
- Mass action law
- Mass chromatogram
- Mass cytometry
- Mass flow
- Mass flow rate
- Mass fraction
- Mass number
- Mass resolution
- Mass spectrometry imaging
- Mass spectrum
- Massive parallel sequencing
- Material properties
- Materials Studio
- Mathematical chemistry
- Matrix metalloproteinases
- Mauveine
- MAX phases
- Mazut
- MBBA
- McLafferty rearrangement
- MCM-41
- MCPA
- MEA
- Mechanical alloying
- Mechanism of action
- Mechanochemistry
- Mechlorethamine
- Mecoprop
- Medications
- Medium-density polyethylene
- Megestrol
- MEK
- MEKP
- Melamine
- Melamine cyanurate
- Melanterite
- Melatonin
- Mellitic acid
- Melphalan
- Membrane filtration
- Membrane gas separation
- Membrane oxygenator
- Membrane reactors
- Membrane technology
- Memory effect
- Menadione
- Menthofuran
- Menthol
- Menthone
- MEOR
- Mercaptobenzothiazole
- Mercaptopurine
- Merck Molecular Force Field
- Mercuric oxide
- Mercury
- Mercury cadmium telluride
- Mercury chloride
- Mercury glass
- Mercury methylation
- Mercury oxide
- Mercury poisoning
- Mercury reductase
- Mercury selenide
- Mercury telluride
- Mercury thermometers
- Mercury(ii) nitrate
- Mercury(ii) sulfate
- Merox
- Merrifield resin
- Merrill-Crowe process
- Mesitylene
- Mesna
- Mesomeric effect
- Mesoporous silica
- Mesoporous silicates
- Mesotrione
- messenger RNA
- Mestranol
- Mesylate
- Meta
- Metabisulfite
- Metaborate
- Metaboric acid
- Metadynamics
- Metal chloride
- Metal dusting
- Metal halides
- Metal ions in aqueous solution
- Metal oxides
- Metal-complex dyes
- Metal-induced crystallization
- Metaldehyde
- Metallacycles
- Metallic bonding
- Metallic bonds
- Metallic hydrogen
- Metallocene
- Metallodendrimer
- Metalloids
- Metalloproteinases
- Metalloproteins
- Metallothionein
- Metanil yellow
- Metasilicate
- Metastability
- Metastable
- Meter data management
- Metering pump
- Metglas
- Methacholine
- Methacrolein
- Methacrylamide
- Methacrylate
- Methanation
- Methane
- Methane clathrate
- Methane leaks
- Methane monooxygenase
- Methane reformer
- Methanesulfonic acid
- Methanesulfonyl chloride
- Methanethiol
- Methanizers
- Methanogens
- Methanol
- Methanol dehydrogenase
- Methanol economy
- Methanol fuel
- Methanol reformer
- Methicillin
- Methionine sulfoxide
- Methotrexate
- Methoxychlor
- Methoxyethane
- Methyl
- Methyl acetate
- Methyl acrylate
- Methyl benzoate
- Methyl bromide
- Methyl carbamate
- Methyl cellulose
- Methyl chloride
- Methyl coenzyme m reductase
- Methyl cyanoacrylate
- Methyl diethanolamine
- Methyl eugenol
- Methyl formate
- Methyl gallate
- Methyl groups
- Methyl iodide
- Methyl isobutyl ketone
- Methyl isocyanate
- Methyl isothiocyanate
- Methyl jasmonate
- Methyl methacrylate
- Methyl orange
- Methyl radicals
- Methyl salicylate
- Methyl violet
- Methyl yellow
- Methylacetylene
- Methylaluminoxane
- Methylamine
- Methylammonium iodide
- Methylation
- Methylcellulose
- Methylcobalamin
- Methylcyclohexane
- Methyldiethanolamine
- Methylene
- Methylene blue
- Methylene diphenyl diisocyanate
- Methylene green
- Methylglyoxal
- Methylhippuric acid
- Methylmercury
- Methylotroph
- Methylotrophic
- Methylparaben
- Methylphenidate
- Methylselenocysteine
- Methyltestosterone
- Methyltransferase
- Methyltrimethoxysilane
- Metolachlor
- Mevalonate
- Mevalonic acid
- MFI
- Mg
- Micellar cubic
- Micellar electrokinetic chromatography
- Micellar solubilization
- Micellar solutions
- Micelles
- Michael addition
- Miconazole
- Micro combustion
- Micro pitting
- Micro-alloy steel
- Micro-combustion
- Micro-encapsulation
- Microalloyed steel
- Microanalysis
- Microbeads
- Microbial corrosion
- Microchannel plate detector
- Microcrystalline wax
- Microcystin-LR
- Microelectrophoresis
- Microemulsions
- Microfiltration
- Micromixing
- Microparticles
- Micropitting
- Microrna
- Microscope slide
- Microscopic reversibility
- Microsegregation
- Microspheres
- Microwave chemistry
- Microwave digestion
- Microwave irradiation
- Midstream
- Miedema's model
- Mifepristone
- Miglitol
- Migratory insertion
- Mild-slope equation
- MIMS
- Mine fire
- Mined
- Mineral acids
- Mineral oil
- Mineral spring
- Miniemulsion
- Minimum ignition energy
- Mir-122
- miR-200
- Mischmetal
- Miscibility
- Miscible
- Mitochondrial DNA
- Mitomycin c
- Mixed metal oxide
- Mixed oxide
- Mixed-valence
- Mixer-settler
- Mixing ratio
- Mixture fraction
- Mixtures
- MLCK
- MLSS
- MMP2
- MMT
- Modafinil
- Mode of action
- Modified atmosphere
- MOF-5
- Moiety
- Moisture content
- Moisture meters
- Moisture sorption isotherm
- Molar absorption coefficient
- Molar concentration
- Molar conductivity
- Molar mass distribution
- Molar refractivity
- Molden
- Molecular crystals
- Molecular distillation
- Molecular dynamics
- Molecular entity
- Molecular formula
- Molecular graph
- Molecular graphics
- Molecular imprinting
- Molecular ions
- Molecular markers
- Molecular model
- Molecular orbital
- Molecular orbital theory
- Molecular recognition
- Molecular self-assembly
- Molecular sensors
- Molecular sieves
- Molecular solid
- Molecular switches
- Molecular tweezers
- Molecular weight cut-off
- Molecular wires
- Molecularity
- Molecularly imprinted polymer
- Molpro
- Molten salt battery
- Molten-salt battery
- Molybdate
- Molybdenum
- Molybdenum blue
- Molybdenum deficiency
- Molybdenum dioxide
- Molybdenum diselenide
- Molybdenum disulfide
- Molybdenum ditelluride
- Molybdenum trioxide
- Molybdenum-99
- Monatomic
- Monatomic gases
- Monazite-(La)
- Monazite-(nd)
- Monel
- Monensin
- Monoamine
- Monoamine neurotransmitters
- Monoamine oxidase
- monoamine oxidase A
- Monobenzone
- Monocalcium phosphate
- Monochloramine
- Monochlorophenol
- Monochromatization
- Monod equation
- Monodisperse
- Monofluorophosphate
- Monoglycerides
- Monohydrogen phosphate
- Monolaurin
- Monolayers
- Monolignols
- Monomers
- Monomethylhydrazine
- Monopropellant
- Monosodium glutamate
- Monoterpenes
- Monoxide
- Monsoon
- Monte Carlo molecular modeling
- Mordant
- Morinda tinctoria
- Morison equation
- Morpholine
- Morpholino
- Mother liquor
- Motor fuel
- Moving shock
- MOX fuel
- MPP+
- mRNA
- MSDS
- MTBE
- Mu-metal
- Muconic acid
- Muffle furnace
- Multi-component reactions
- Multidrug resistance
- Multiple drug resistance
- Multivalent
- Muscle relaxants
- Musk xylene
- Mutagens
- Mutase
- MVK
- MXenes
- Mycotoxins
- Myeloperoxidase
- Myrcene
- Myricetin
- Myrosinase
- N-acetylcysteine
- N-acetylneuraminic acid
- N-acetyltransferase
- N-acyl homoserine lactone
- N-bromosuccinimide
- N-butanol
- N-butylamine
- N-electron valence state perturbation theory
- N-ethylmaleimide
- N-glycolylneuraminic acid
- N-hydroxysuccinimide
- N-linked glycosylation
- N-methyl-2-pyrrolidone
- N-methylformamide
- N-methylmorpholine N-oxide
- N-methylpyrrolidone
- N-phenylglycine
- N-vinylpyrrolidone
- NaCl
- NAD
- NADH
- NADP
- NADPH
- Nafion
- Naftifine
- Naloxone
- Naltrexone
- NAMD
- Nanobuds
- Nanoclusters
- Nanodiamonds
- Nanoemulsion
- Nanofluidics
- Nanomesh
- Nanopore sequencing
- Naphtha
- Naphthalene
- Naphthalene-2-sulfonic acid
- Naphthenic acid
- Naphthoquinone
- Naphthylamine
- NAPL
- Naproxen
- Narcolepsy
- Naringenin
- Nasal administration
- Nascent hydrogen
- Nasicon
- Natamycin
- Nattokinase
- Natural abundance
- Natural dyes
- Natural foods
- Natural gas
- Natural gas leaks
- Natural gas prices
- Natural gas processing
- Natural gas storage
- Natural gasoline
- Natural gum
- Natural phenol
- Natural products
- Natural-gas condensate
- Naturally occurring phenols
- Nd:yag laser
- Nd:yvo4
- NDC
- Neem oil
- Nef reaction
- Negative thermal expansion
- Negishi coupling
- Neocuproine
- Neodymium
- Neodymium chloride
- Neodymium magnets
- Neodymium oxide
- Neon
- Neopentane
- Neopentyl glycol
- Nephelauxetic effect
- Nephelometry
- Nephrotoxicity
- Neprilysin
- Neptunium
- Neptunium-237
- NER
- Nernst equation
- Nerol
- Nessler's reagent
- Net protein utilization
- Neurotoxins
- Neutral
- Neutralization
- Neutron activation analysis
- Newtonian fluids
- Nf-κb
- NGNP
- NGS
- NHEJ
- Niacin
- Nickel
- Nickel acetate
- Nickel aluminide
- Nickel carbonate
- Nickel chloride
- Nickel compounds
- Nickel electroplating
- Nickel fluoride
- Nickel hydride
- Nickel hydroxide
- Nickel oxide hydroxide
- Nickel plated
- Nickel silicide
- Nickel silver
- Nickel sulfate
- Nickel sulfide
- Nickel-cadmium batteries
- Nickel-cadmium battery
- Nickel-metal hydride battery
- Nickel-zinc battery
- Nickelocene
- Nicotiana benthamiana
- Nicotinamide
- Nicotine
- Nicotine salt
- Nicrosil
- Nife hydrogenase
- Nile Red
- NiMH
- Nimonic
- Ninhydrin
- Niobium
- Niobium alloy
- Niobium chloride
- Niobium-tin
- Niobium-titanium
- Nisil
- Nital
- Nitarsone
- Nitazoxanide
- Niter
- Nitrate
- Nitrate esters
- Nitrate radical
- Nitrate reductase
- Nitration
- Nitrene
- Nitrenium ion
- Nitric
- Nitric acid
- Nitric oxide
- Nitric oxide synthase 2
- Nitric-oxide reductase
- Nitrification
- Nitrile
- Nitrile hydratase
- Nitrile rubber
- Nitrilotriacetic acid
- Nitrite
- Nitrite reductase
- Nitro
- Nitro compounds
- Nitrobenzene
- Nitrofen
- Nitrofuran
- Nitrofurazone
- Nitrogen assimilation
- Nitrogen compounds
- Nitrogen cycle
- Nitrogen deficiency
- Nitrogen dioxide
- Nitrogen fixation
- Nitrogen generators
- Nitrogen ice
- Nitrogen narcosis
- Nitrogen oxides
- Nitrogen rejection unit
- Nitrogen trifluoride
- Nitrogen-13
- Nitrogenase
- Nitroglycerin
- Nitroimidazole
- Nitromethane
- Nitronic
- Nitronium
- Nitronium ion
- Nitrophenol
- Nitroprusside
- Nitrosamines
- Nitrosation
- Nitrosonium
- Nitrosonium tetrafluoroborate
- Nitrosourea
- Nitrosylation
- Nitrous acid
- Nitrous oxide
- Nitrous-oxide reductase
- Nitroxide-mediated radical polymerization
- Nitryl
- NMC
- NNK
- No-slip condition
- Noble gases
- Noble metals
- Nodularin
- Non-coding DNA
- Non-coding RNA
- Non-competitive inhibition
- Non-covalent
- Non-covalent interactions
- Non-drying oil
- Non-heme iron enzymes
- Non-linear effects
- Non-nucleophilic bases
- Non-proteinogenic amino acids
- Non-stoichiometric
- Nonane
- Nonmetals
- Nonoxynol
- Nonoxynol-9
- Nonylphenol
- Nootkatone
- Nootropics
- Norbornene
- Nord Stream 2
- Nornicotine
- Nortriptyline
- NOS
- Noscapine
- Novobiocin
- NPN
- Nqo1
- Nuclear battery
- Nuclear chemistry
- Nuclear fuel
- Nuclear fuel cycle
- Nuclear reprocessing
- Nuclease
- Nucleic acid
- Nucleic acid sequence
- Nucleobases
- Nucleophiles
- Nucleophilic acyl substitution
- Nucleophilic addition
- Nucleophilic substitution
- Nucleoside-diphosphate kinase
- Nujol
- Nutraceuticals
- Nutrients
- Nylon 12
- Nylon 6
- Nylon 66
- Nystatin
- O-acetyl-l-serine
- O-acetylserine
- O-cresol
- O-methyltransferase
- o-Phenylenediamine
- O-phthalaldehyde
- o-toluidine
- O-xylene
- Obsidian
- Ocean acidification
- Ocean chemistry
- Ocean color
- Ocean dynamics
- Ochratoxin
- ochratoxin A
- Ochre
- Octacalcium phosphate
- Octadecane
- Octadecyltrichlorosilane
- Octane
- Octanitrocubane
- Octanol
- Octanol-water partition coefficient
- Octasulfur
- Octene
- Octenidine
- Octet rule
- Octinoxate
- Octocrylene
- Octol
- Octyl cyanoacrylate
- Octyl gallate
- Offshore
- Offshore drilling
- Oil
- Oil burners
- Oil dispersants
- Oil mist
- Oil paint
- Oil press
- Oil production
- Oil red O
- Oil shale gas
- Oil spills
- Oil terminal
- Oleanane
- Oleanolic acid
- Olefin metathesis
- Oleic acid
- Oleochemicals
- Oleophobic
- Oleum
- Oleuropein
- Oleylamine
- Oligomers
- Oligomycin
- Oligonucleotides
- Omega-3 fatty acids
- OMZ
- On-water reactions
- One-pot synthesis
- Oniom
- Onshore
- Opal
- Opiates
- Opioids
- OPLS
- Optical brightener
- Opuntia
- Orange oil
- Orbital hybridization
- Orbitrap
- ORCA
- Orcinol
- Organic acids
- Organic bases
- Organic carbon
- Organic compounds
- Organic matter
- Organic peroxides
- Organic sulfide
- Organic superconductors
- Organic synthesis
- Organocatalysis
- Organocopper
- Organofluorine compounds
- Organolithium
- Organolithium reagents
- Organomercury
- Organometallic chemistry
- Organophosphate
- Organophosphate poisoning
- Organophosphorus compounds
- Organosilicon compounds
- Organosolv
- Organosulfur compounds
- Organotin compounds
- Orifice plates
- Orlistat
- Ornithine decarboxylase
- Ornithine transcarbamylase
- Orogenic gold deposits
- OROS
- Orotic acid
- Ortho
- Ortho-carborane
- Orthoesters
- Orthophosphate
- Orthosilicate
- Orthosilicic acid
- Oseen equations
- Oseltamivir
- Osmium
- Osmolality
- Osmolarity
- Osmotic coefficient
- Osmotic dehydration
- Ostwald ripening
- Ouabain
- Outer sphere electron transfer
- Ouzo effect
- Overlayer
- Oxalate
- Oxalate oxidase
- Oxalic acid
- Oxaliplatin
- Oxaloacetate
- Oxalyl chloride
- Oxazine
- Oxazines
- Oxazole
- Oxazolidine
- Oxazoline
- Oxidases
- Oxidation
- Oxidation state
- Oxidative addition
- Oxidative coupling
- Oxidative coupling of methane
- Oxidative decarboxylation
- Oxidative dissolution of silver nanoparticles
- Oxide dispersion strengthened
- Oxidizing agents
- Oxidoreductases
- Oximes
- Oxindole
- Oxo alcohol
- Oxone
- Oxonium ions
- Oxophilic
- Oxy-combustion
- Oxy-fuel combustion process
- Oxyacetylene
- Oxyanion hole
- Oxyanions
- Oxybenzone
- Oxychloride
- Oxychlorination
- Oxygen balance
- Oxygen compounds
- Oxygen concentrator
- Oxygen difluoride
- Oxygen evolution
- Oxygen isotopes
- Oxygen reduction reaction
- Oxygen saturation
- Oxygen scavengers
- Oxygen sensor
- Oxygen tanks
- Oxygen-16
- Oxygen-free copper
- Oxygenases
- Oxygenates
- Oxyhydrogen
- Oxynitride
- Oxysterols
- Oyster
- Ozone
- Ozone cracking
- Ozonides
- Ozonolysis
- P-coumaric acid
- P-cresol
- P-cymene
- P-toluenesulfonic acid
- P-xylene
- p38
- P38 mitogen-activated protein kinases
- PABA
- Pack ice
- Packed bed
- Paclitaxel
- Paclobutrazol
- Paddle wheels
- Paint stripper
- Paint thinner
- Paleosalinity
- Palladium
- Palladium acetate
- Palladium chloride
- Palladium compounds
- Palladium hydride
- Palladium on carbon
- Palmitic acid
- Palmitoleic acid
- Palmitoyl-CoA
- Pancake ice
- Panthenol
- Pantothenic acid
- Papain
- Papain-like protease
- Papaverine
- Paper chromatography
- Paper towels
- Parabens
- Paracetamol
- Paracrystallinity
- Paraffin wax
- Paraformaldehyde
- Parahydrogen
- Paraldehyde
- Paraoxonase
- Paraquat
- Parathion methyl
- Paraxanthine
- Parent compound
- Parenteral
- Parthenolide
- Partial agonist
- Partial charge
- Partial molar property
- Partial oxidation
- Partial pressure
- Particle aggregation
- Particle deposition
- Particle size
- Particle size distribution
- Particle technology
- Particle-size distribution
- Particulate organic carbon
- Partition coefficient
- Parylene
- Passive autocatalytic recombiner
- Patulin
- Paul trap
- PCET
- PDMS
- PDMS stamp
- Peak expiratory flow
- Peak water
- Peanut
- Pearlite
- Pebax
- Pechmann condensation
- Pectate
- Pectate lyase
- Pectic acid
- Pectin
- Pectinase
- Pectinesterase
- Pedosphere
- PEDOT
- PEEK
- Peer support
- PEG 400
- PEG-PVA
- Pegloticase
- PEL
- Pelargonic acid
- Pelargonidin
- Pellet fuel
- Pelletizing
- Pellets
- PEM
- PEM electrolysis
- Pemetrexed
- Pendant groups
- Pendimethalin
- Penetrating oil
- Penetration enhancers
- Penicillamine
- Penta-graphene
- Pentabde
- Pentacene
- Pentachlorobenzene
- Pentachlorophenol
- Pentadiene
- Pentaerythritol
- Pentaerythritol tetraacrylate
- Pentaerythritol tetranitrate
- Pentafluoropropane
- Pentamer
- Pentane
- Pentene
- Pentosan
- Pentoxifylline
- Pentyl
- Pepper
- Peppermint
- Pepsin
- Peptide synthesis
- Peptization
- Pepto-Bismol
- Per- and polyfluoroalkyl substances
- Peracetic acid
- Peramivir
- Perchlorate
- Perchloric acid
- Perfect gas
- Perfect mixing
- Perfluorinated compounds
- Perfluoroalkyl carboxylic acids
- Perfluorobutanesulfonic acid
- Perfluorodecanoic acid
- Perfluorohexane
- Perfluorohexanesulfonic acid
- Perfluorohexanoic acid
- Perfluorooctane
- Perfluorooctanesulfonic acid
- Perfluorooctanoic acid
- Perfluorosulfonic acids
- Performic acid
- Pericyclic reactions
- Peridinin
- Perillyl alcohol
- Periodate
- Periodic acid
- Periodic boundary conditions
- Periodic table
- Periodic trends
- Permalloy
- Permanganate
- Permendur
- Permethrin
- Permit-to-work
- Peroxidase
- Peroxide
- Peroxide value
- Peroxiredoxin
- Peroxodisulfate
- Peroxydisulfate
- Peroxynitrite
- Perrhenate
- Persistent organic pollutants
- Personal care
- Personal care products
- Perstraction
- Persulfate
- Pertechnetate
- Pervanadyl
- Pervaporation
- Pesticide poisoning
- Pesticides
- Petri dishes
- Petrochemicals
- Petroleum
- Petroleum coke
- Petroleum ether
- Petroleum industry
- Petroleum naphtha
- Petroleum products
- Pewter
- PFA
- PFAS
- PFOA
- PFOS
- PGMEA
- PGNAA
- pH
- pH indicators
- pH meter
- Phagraphene
- Pharmaceutical
- Pharmaceutical industry
- Pharmaceutical manufacturing
- Pharmaceutics
- Pharmacodynamics
- Pharmacogenomics
- Pharmacognosy
- Pharmacokinetics
- Pharmacology
- Pharmacovigilance
- Pharmacy
- Phase diagrams
- Phase inversion
- Phase rule
- Phase separation
- Phase transfer catalyst
- Phase-transfer catalyst
- Phenanthrene
- Phenanthroline
- Phenazine
- Phenazone
- Phenethylamine
- Phenol
- Phenol formaldehyde resin
- Phenol red
- Phenolate
- Phenolates
- Phenolic acids
- Phenolic aldehydes
- Phenolic lipids
- Phenolic resin
- Phenolphthalein
- Phenols
- Phenothiazine
- Phenoxyethanol
- Phenyl
- Phenyl group
- Phenyl isocyanate
- Phenyl-c61-butyric acid methyl ester
- Phenylacetaldehyde
- Phenylalanine
- Phenylalanine ammonia-lyase
- Phenylalanine hydroxylase
- Phenylboronic acid
- Phenylene
- Phenylenediamine
- Phenylhydrazine
- Phenylhydroxylamine
- Phenylpropanoids
- Phenytoin
- Phorbol
- Phorbol esters
- Phosphatase
- Phosphate
- Phosphate acetyltransferase
- Phosphate glass
- Phosphate test
- Phosphatidate phosphatase
- Phosphatidylcholine
- Phosphazene
- Phosphides
- Phosphinate
- Phosphine
- Phosphine ligands
- Phosphine oxide
- Phosphinite
- Phosphite
- Phosphites
- Phosphocholine
- Phosphocreatine
- Phosphodiesterase
- Phosphoenolpyruvate
- Phosphoenolpyruvate carboxylase
- Phosphofructokinase
- Phosphoglucomutase
- Phosphoglycerate kinase
- Phosphoinositide 3-kinase
- Phosphoketolase
- Phosphole
- phospholipase C
- phospholipase D
- Phosphomolybdic acid
- Phosphonates
- Phosphonium
- Phosphor bronze
- Phosphoramide
- Phosphoramidite
- Phosphorene
- Phosphoric acid
- Phosphorous acid
- Phosphorus oxychloride
- Phosphorus pentachloride
- Phosphorus pentafluoride
- Phosphorus pentoxide
- Phosphorus trichloride
- Phosphoryl fluoride
- Phosphoryl groups
- Phosphorylase
- Phosphorylcholine
- Phosphoserine
- Phosphotransferase
- Phosphotungstic acid
- Photoacid
- Photocatalysis
- Photocatalytic water splitting
- Photocathode
- Photochemical reactions
- Photochemistry
- Photodegradation
- Photodissociation
- Photoelectrochemistry
- Photoexcitation
- Photofragment-ion imaging
- Photoinduced electron transfer
- Photoisomerization
- Photolyase
- Photolysis
- Photopolymers
- Photoprotection
- Photoredox catalysis
- Photoresist
- Photosensitive glass
- Photostationary state
- Photosystem I
- Photosystem II
- Photothermal effect
- Phthalaldehyde
- Phthalates
- Phthalic anhydride
- Phthalocyanine
- Phthalonitrile
- Phycobilins
- Phycoerythrobilin
- Physisorption
- Phytane
- Phytase
- Phytic acid
- Phytoalexins
- Phytochemicals
- Phytoene desaturase
- Phytoene synthase
- Phytoestrogens
- Phytofluene
- Phytol
- Phytosterols
- Phytotoxic
- Pi bond
- PI3K
- Piceatannol
- Pickering emulsion
- Picloram
- Picrate
- Picric acid
- Pidgeon process
- Pig iron
- Pigeon pea
- PIK3CA
- Pillararene
- Pilling-Bedworth ratio
- Pilotage
- Pimaric acid
- PIMD
- Pinacol
- Pinacolborane
- Pine tar
- Pinene
- Piperacillin
- Piperidine
- Piperidine alkaloids
- Piperine
- Piperonyl butoxide
- Pipette
- Piracetam
- Piranha solution
- Pitting corrosion
- pKa
- PKB
- PKC
- PKR
- Planar chirality
- Plasma chemistry
- Plasma electrolytic oxidation
- Plasma membrane H+-ATPase
- Plasma polymerization
- Plasmin
- Plaster
- Plastic explosive
- Plastoquinone
- Plate column
- Plate glass
- Platinum
- Platinum black
- Platinum chloride
- Platinum-iridium
- Platinum-iridium alloy
- Plerixafor
- Pleuromutilin
- PLGA
- Plk1
- Plug flow
- Plug flow reactor model
- Plug flow reactors
- Plumbagin
- Plumbosolvency
- Plunger lift
- Plutonium
- Plutonium chloride
- Plutonium dioxide
- Plutonium oxide
- Plutonium-238
- PMSF
- PNA
- PNEC
- PNPP
- Point of zero charge
- Poisonous
- Polar
- Polar aprotic solvents
- Polar ice caps
- Polarity
- Polarography
- Polonium
- Polonium-210
- Poloxamer
- Poloxamer 407
- Polyacrylamide
- Polyacrylic acid
- Polyacrylonitrile
- Polyaddition
- Polyallylamine hydrochloride
- Polyamide
- Polyamines
- Polyaniline
- Polyaryletherketone
- Polyaspartic
- Polyaspartic acid
- Polyatomic ions
- Polybenzimidazole
- Polybenzoxazine
- Polybutadiene
- Polybutadiene acrylonitrile
- Polybutylene succinate
- Polybutylene terephthalate
- Polycaprolactone
- Polycarboxylate
- Polycarboxylates
- Polychlorinated biphenyls
- Polychlorinated dibenzodioxins
- Polychlorinated dibenzofurans
- Polycondensation
- Polycyclic
- Polycyclic aromatic hydrocarbons
- Polydadmac
- Polydiacetylenes
- Polydimethylsiloxane
- Polyelectrolytes
- Polyenes
- Polyester resin
- Polyether block amide
- Polyether ether ketone
- Polyethylene
- Polyethylene glycol
- Polyethylene naphthalate
- Polyethylene terephthalate
- Polyethylenimine
- Polyfluorene
- Polygalacturonase
- Polyglutamic acid
- Polyiodide
- Polyisobutylene
- Polyisoprene
- Polyketide synthase
- Polyketides
- Polylysine
- Polymer adsorption
- Polymer architecture
- Polymer backbone
- Polymer blends
- Polymer brush
- Polymer degradation
- Polymer electrolytes
- Polymer engineering
- Polymer fractionation
- Polymer stabilizers
- Polymer-bonded explosive
- Polymer-drug conjugates
- Polymerase
- Polymeric surfaces
- Polymerisation inhibitor
- Polymerization
- Polymers
- Polymethine dyes
- Polymethylhydrosiloxane
- Polynucleotide
- Polyolefins
- Polyols
- Polyoxometalate
- Polyphenol oxidase
- Polyphenols
- Polyphosphate
- Polyphosphazene
- Polyphthalamide
- Polypill
- Polypropylene glycol
- Polypyrrole
- Polyquaternium
- Polyrotaxanes
- Polysorbate
- Polysorbate 20
- Polysorbate 80
- Polystyrene sulfonate
- Polysulfide
- Polytetrafluoroethylene
- Polytetrahydrofuran
- Polythiophene
- Polyurea
- Polyurethane dispersion
- Polyvinyl acetate
- Polyvinyl alcohol
- Polyvinyl fluoride
- Polyvinylpolypyrrolidone
- Polyvinylpyrrolidone
- Polyvinyltoluene
- Polyyne
- POM
- Pomegranates
- Ponceau 4R
- Pool fire
- Porous glass
- Porous silicon
- Porphine
- Porphobilinogen
- Porphobilinogen deaminase
- Port of Santos
- Post combustion capture
- Post-combustion capture
- Post-transition metals
- Postreplication repair
- Potash
- Potassium
- Potassium acetate
- Potassium alum
- Potassium amyl xanthate
- Potassium bicarbonate
- Potassium bitartrate
- Potassium bromide
- Potassium carbonate
- Potassium chlorate
- Potassium chromate
- Potassium cyanate
- Potassium dichromate
- Potassium ethyl xanthate
- Potassium ferrate
- Potassium ferrioxalate
- Potassium ferrocyanide
- Potassium formate
- Potassium hydrogen phthalate
- Potassium hydroxide
- Potassium hypochlorite
- Potassium lactate
- Potassium nitrate
- Potassium nitrite
- Potassium oxide
- Potassium perchlorate
- Potassium periodate
- Potassium permanganate
- Potassium peroxymonosulfate
- Potassium persulfate
- Potassium phosphate
- Potassium silicate
- Potassium sorbate
- Potassium sulfate
- Potassium sulfide
- Potassium superoxide
- Potassium thiocyanate
- Potassium-40
- Potassium-ion battery
- Potency
- Potential applications of graphene
- Potential flow
- Potential of mean force
- Potentiometric titration
- Potentiostat
- Pour point
- Pourbaix diagram
- Power plants
- Power stations
- PP1
- Praseodymium
- Praseodymium nitrate
- Pre-exponential factor
- Pre-mRNA
- Preceramic polymers
- Precipitate
- Precipitated silica
- Precipitation
- Precipitation polymerization
- Preclinical
- Precursor chemicals
- Precursors
- Predominance diagram
- Pregnenolone
- Premelting
- Premixed flames
- PREN
- Prephenate
- Prepolymer
- Pressure exchanger
- Pressure gradient force
- Pressure head
- Pressure swing adsorption
- Pressure-gradient force
- Primary alcohols
- Primary carbon
- Primary standard
- Primitive mantle
- Principle
- Pristane
- Proanthocyanidin
- Procainamide
- Procaine
- Procarbazine
- Process control
- Process engineering
- Process flow diagrams
- Process hazard analysis
- Process safety
- Process safety management
- Prochiral
- Procyanidin
- Procymidone
- Prodigiosin
- Prodrugs
- Produced water
- Producer gas
- Product inhibition
- Production fluid
- Prolyl hydroxylase
- Promethazine
- Pronase
- Proofreading
- Propane torch
- Propanil
- Propanol
- Propargyl
- Propargyl alcohol
- Propellants
- Propenyl
- Propiconazole
- Propidium iodide
- Propidium monoazide
- Propionaldehyde
- Propionic acid
- Propofol
- Propolis
- Proposition 65
- Propoxur
- Proprotein convertases
- Propyl acetate
- Propyl gallate
- Propylamine
- Propylene
- Propylene carbonate
- Propylene glycol
- Propylene glycol alginate
- Propylene oxide
- Propyleneimine
- Propylparaben
- Propyne
- Propyphenazone
- Protamine sulfate
- Protease inhibitors
- Proteases
- Proteasome inhibitor
- Protecting groups
- Protein kinase
- Protein kinase inhibitors
- Protein mass spectrometry
- Protein phosphatases
- Protein-ligand docking
- Proteinase K
- Protic ionic liquids
- Protic solvents
- Protocatechuic acid
- Protochlorophyllide
- Proton conductor
- Proton exchange membrane electrolysis
- Proton sponge
- Proton-exchange membrane
- Proton-transfer-reaction mass spectrometry
- Protonation
- Protoporphyrin IX
- Protoporphyrinogen oxidase
- Provitamin
- PRPP
- Prussian blue
- Pseudo amino acid composition
- Pseudoboehmite
- Pseudorotation
- Psilocybin
- Psoralen
- Psychoactive
- Pteridine
- Pterin
- Pterostilbene
- PTR-MS
- Public utility
- Puerarin
- Pulegone
- Pullulanase
- Pulsed columns
- Pulverizer
- Purified water
- Purine
- Purity
- Putrescine
- Pyocyanin
- Pyoverdine
- Pyran
- Pyrazinamide
- Pyrazine
- Pyrazole
- Pyrazolone
- Pyrene
- Pyrethroids
- Pyrex
- Pyridine
- Pyridine complex
- Pyridine-n-oxide
- Pyridinium
- Pyridinium chlorochromate
- Pyridostigmine
- Pyridoxal
- Pyridoxal phosphate
- Pyridoxamine
- Pyridoxine
- Pyrimidine
- Pyrimidine dimers
- Pyrimidine metabolism
- Pyrimidinedione
- Pyrite
- Pyrithione
- Pyroceram
- Pyrocumulonimbus
- Pyrogallol
- Pyroglutamic acid
- Pyroligneous acid
- Pyrolysis gasoline
- Pyrolysis oil
- Pyrolytic carbon
- Pyrolytic graphite
- Pyromellitic dianhydride
- Pyrone
- Pyrophoric
- Pyrophosphoric acid
- Pyroprocessing
- Pyrosulfate
- Pyrotechnic
- Pyrrole
- Pyrrolidine
- Pyrroline
- Pyrroline-5-carboxylate reductase
- Pyrrolizidine alkaloids
- Pyrroloquinoline quinone
- Pyruvate carboxylase
- Pyruvate decarboxylase
- Pyruvate dehydrogenase
- Pyruvate kinase
- Quadramet
- Quadruple bonds
- Quadrupole ion trap
- Quadrupole mass analyzer
- Quantitative proteomics
- Quantum espresso
- Quasi-solid
- Quaternary
- Quaternary ammonium cation
- Quaternary ammonium salts
- Quaternary phase
- Quaternium-15
- QuEChERS
- Quercetin
- Quicksilver
- Quinazoline
- Quinazolinone
- Quinic acid
- Quinine
- Quinoid
- Quinoline
- Quinone
- Quinoxaline
- R-134a
- R-407C
- R-410A
- R-phase
- R245fa
- Racemic
- Racemic acid
- Racemic mixtures
- Racemization
- Raclopride
- Rad51
- Radiation chemistry
- Radiation stress
- Radical addition
- Radical anion
- Radical clocks
- Radical cyclization
- Radical initiator
- Radical polymerization
- radical SAM
- Radical scavenger
- Radical substitution
- Radicals
- Radioactive iodine
- Radiocarbon dating
- Radiochemistry
- Radiolysis
- Radiosynthesis
- Radium
- Radium compounds
- Radium sulfate
- Radium-223
- Radon
- Radon-222
- Raffinate
- RAFT
- Ram pressure
- Rancid
- Random coils
- Random sequential adsorption
- Raney Nickel
- Rankine-Hugoniot conditions
- Raoult's law
- RAS
- Rasmol
- Rate constant
- Rate equation
- Rate-determining step
- Rate-limiting step
- Ravuconazole
- Raw water
- Rayleigh fractionation
- Rayon
- RDE
- RDF
- RDI
- rDNA
- RdRp
- RDX
- Re-Os
- Reaction coordinate
- Reaction dynamics
- Reaction intermediates
- Reaction mechanism
- Reaction quotient
- Reaction rate
- Reaction rate constant
- Reaction step
- Reactive
- Reactive center
- Reactive diluent
- Reactive dyes
- Reactive intermediates
- Reactive materials
- Reactive nitrogen
- Reactive sulfur species
- Reactivity
- Reactivity series
- Reads
- Reagent bottles
- Reagents
- Real gas
- ReaxFF
- REBCO
- Receptor modulators
- Rechargeable battery
- Recrystallization
- Rectisol
- Recycled fuel
- Red lead
- Red tide
- Redistribution
- Redox
- Redox gradient
- Redox indicator
- Redox titration
- Reducing agents
- Reductase
- Reductive amination
- Reductive dechlorination
- Reductive elimination
- Reference electrode
- Reflectron
- Reflux
- Refrigerants
- Regasification
- Regioselectivity
- Regulators
- Regulatory enzymes
- Reinforcement
- REL
- Relative permeability
- Remdesivir
- Remineralization
- Renewable diesel
- Rennet
- Repeat unit
- Reproductive toxicity
- Resazurin
- Reservoir simulation
- Residual gas analyzer
- Residue
- Resonance ionization
- Resorcinarene
- Response factor
- Resveratrol
- Retene
- Retention factor
- Retinoic acid
- Retinyl palmitate
- Retorts
- Reversed-phase chromatography
- Reversible
- Reversible hydrogen electrode
- Reversible reaction
- Reversible-deactivation radical polymerization
- Reynolds decomposition
- Reynolds stress
- RFNA
- RHA
- Rhenium
- Rhenium hexafluoride
- Rheometers
- Rho
- Rhodamine
- Rhodamine 123
- Rhodamine 6g
- Rhodamine B
- Rhodanese
- Rhodium
- Rhodium acetate
- Ribitol
- Riboflavin
- Ribonuclease
- Ribonuclease A
- Ribonucleotide reductase
- Ribonucleotides
- Ribose
- Ribose 5-phosphate
- Ribosomal DNA
- Ribosomal RNA
- Ribulose
- Ribulose 5-phosphate
- Rice bran wax
- Ricinine
- Rickets
- Rifampicin
- Rimantadine
- Rime ice
- Ring strain
- Ring-closing metathesis
- Ring-opening polymerization
- Ritalinic acid
- Ritonavir
- RNA
- RNA hydrolysis
- RNA polymerase
- RNA silencing
- RNA structure
- RNAi
- RNase P
- RNS
- Rochelle salt
- Rock
- Rocket fuel
- Rocket propellant
- Rogue waves
- Romidepsin
- ROMP
- Room for the River
- Root nodules
- ROS
- Rose oxide
- Rosemary
- Rosette sampler
- Rotameters
- Rotary dryer
- Rotary kilns
- Rotational correlation time
- Rotational viscosity
- Rotenone
- Roundup
- Route
- Route of administration
- Roxarsone
- RP-1
- RRDE
- Rubber seed oil
- Rubia cordifolia
- Rubidium
- Rubidium carbonate
- Rubrene
- Rushton turbine
- Russian iron
- Rusticles
- Ruthenium
- Ruthenium oxide
- Ruthenium-106
- Ruthenium(iv) oxide
- Ruthenocene
- Rutherfordium
- Rutin
- RVP
- Ryanodine
- S-nitrosothiol
- Sabatier reaction
- Saccharin
- Sacrificial anodes
- Sacrificial metal
- SAE J1772
- Safety glass
- Safety instrumented system
- Safety pharmacology
- Saffron
- Safranal
- Safranin
- SAGD
- Salen ligands
- Salicylaldehyde
- Salicylaldoxime
- Salicylic acid
- Saline water
- Salinity
- Salinization
- Salt
- Salt bridges
- Salt crust
- Salt lakes
- Salting in
- Salting out
- Saltpeter
- Samarium
- Samarium oxide
- Sample preparation
- Sanguinarine
- Saponification
- Saponification value
- Sarcosine
- Satraplatin
- Saturation diving
- Sauter mean diameter
- Sawdust
- Saxitoxin
- Scandium
- Scandium oxide
- Scavengers
- SCC
- SCE
- Schiff bases
- Schwertmannite
- Scintillators
- Scopolamine
- SCR
- Scrap
- Scuba
- SDS
- Sea ice
- Sea ice concentration
- Sea ice thickness
- Sea salt
- Sea surface
- Seaborgium
- Seakeeping
- Season cracking
- Seawater
- Sebacic acid
- SEC
- Sec-butylamine
- Sec-butylbenzene
- Secoisolariciresinol
- Secondary carbon
- Secondary electrons
- Secondary flow
- Sector mass spectrometer
- Sedatives
- Seiches
- Selected ion monitoring
- Selected-ion flow-tube mass spectrometry
- Selectfluor
- Selective
- Selective leaching
- Selectivity
- Selenate
- Selenides
- Selenium
- Selenium deficiency
- Selenium dioxide
- Selenocysteine
- Selenol
- Selenomethionine
- Selenophene
- Selenourea
- Selenous acid
- Selexol
- Self accelerating decomposition temperature
- Self-cleaning
- Self-cleaning glass
- Self-cleaning surfaces
- Self-condensation
- Self-discharge
- Self-healing hydrogels
- Self-ionization of water
- Self-propagating high-temperature synthesis
- Semi-drying oil
- Semi-solid
- Semi-synthetic
- Semicarbazone
- Semipermeable membrane devices
- Semiquinone
- Sensor-based sorting
- Separation processes
- Separatory funnel
- Serine hydrolase
- Serine hydroxymethyltransferase
- Serine proteases
- Serious adverse events
- Serotonin
- Serotonin reuptake inhibitor
- Sesamolin
- Sesquioxides
- Sesquiterpene lactones
- Sesquiterpenes
- Settling
- Sevoflurane
- Shading coefficient
- Shallow water equations
- Shampoo
- Shape-memory alloys
- Shaving cream
- Shellac
- Sherardising
- Sherardizing
- Shock sensitivity
- Shoe polish
- short hairpin RNA
- Short path distillation
- Short-path distillation
- Shotgun proteomics
- Shrimp
- Shut-in
- Side chains
- Side reactions
- Siesta
- Sieve analysis
- Sieves
- SiGe
- Sigma bonds
- Sigmatropic rearrangement
- SIL
- Silane
- Silanes
- Silanization
- Silanol
- Silastic
- Silica
- Silica fiber
- Silica fume
- Silica gel
- Silica sulfuric acid
- Silica-alumina
- Silicates
- Silicic acid
- Silicides
- Silicon
- Silicon alkoxide
- Silicon carbide fibers
- Silicon dioxide
- Silicon monoxide
- Silicon oxycarbide
- Silicon oxynitride
- Silicon steel
- Silicon tetrachloride
- Silicon tetrafluoride
- Silicon-oxygen bond
- Silicone
- Silicone grease
- Silicone oil
- Silicone resin
- Silicone rubber
- Siloxane
- Silsesquioxane
- Silver
- Silver acetylide
- Silver behenate
- Silver carbonate
- Silver chloride electrode
- Silver compounds
- Silver cyanide
- Silver halide
- Silver iodide
- Silver nitrate
- Silver oxide
- Silver phosphate
- Silver steel
- Silver sulfate
- Silver sulfide
- Silver telluride
- Silver triflate
- Silverware
- Silylation
- Silylene
- Simazine
- SIMION
- SIMS
- Simultaneous nitrification-denitrification
- Sinapinic acid
- Sinapyl alcohol
- Single bond
- Singlet oxygen
- Sinter plant
- Siphons
- siRNA
- Sitagliptin
- Skatole
- Skeletal fluorosis
- Skills
- Slack tide
- Slender-body theory
- Slip ratio
- Slipperiness
- Slug flow
- SMA
- small interfering RNA
- small nucleolar RNA
- Small RNAs
- Smart glass
- SMILES
- Smoke point
- Smokeless fuel
- Smoking cessation
- Smouldering
- Sn-38
- SN2
- Snake venom
- Snow
- Soap
- Soap bubbles
- Soap scum
- Sod1
- Soda lime
- Soda-lime glass
- Sodium
- Sodium acetate
- Sodium acid pyrophosphate
- Sodium aluminosilicate
- Sodium amide
- Sodium ascorbate
- Sodium aurothiomalate
- Sodium azide
- Sodium benzoate
- Sodium bicarbonate
- Sodium bifluoride
- Sodium bismuth titanate
- Sodium bismuthate
- Sodium bisulfite
- Sodium borate
- Sodium borohydride
- Sodium butyrate
- Sodium carbonate
- Sodium channel blockers
- Sodium chlorate
- Sodium chloride
- Sodium chloroacetate
- Sodium chromate
- Sodium citrate
- Sodium cobaltinitrite
- Sodium diacetate
- Sodium dichloroisocyanurate
- Sodium dichromate
- Sodium dithionite
- Sodium diuranate
- Sodium dodecylbenzenesulfonate
- Sodium erythorbate
- Sodium ethoxide
- Sodium ferrocyanide
- Sodium fluoroacetate
- Sodium formate
- Sodium gluconate
- Sodium hexametaphosphate
- Sodium hyaluronate
- Sodium hydrosulfide
- Sodium hydroxide
- Sodium hypochlorite
- Sodium hypophosphite
- Sodium lactate
- Sodium laurate
- Sodium laureth sulfate
- Sodium lauryl sulfate
- Sodium metabisulfite
- Sodium metaborate
- Sodium metasilicate
- Sodium metavanadate
- Sodium methoxide
- Sodium molybdate
- Sodium monofluorophosphate
- Sodium nitrate
- Sodium nitrite
- Sodium oxalate
- Sodium oxide
- Sodium pentaborate
- Sodium perborate
- Sodium percarbonate
- Sodium perchlorate
- Sodium periodate
- Sodium permanganate
- Sodium peroxide
- Sodium persulfate
- Sodium pertechnetate
- Sodium phenylbutyrate
- Sodium phosphate
- Sodium polyacrylate
- Sodium polysulfide
- Sodium propionate
- Sodium salicylate
- Sodium salt
- Sodium salts
- Sodium selenate
- Sodium selenite
- Sodium silicate
- Sodium stearate
- Sodium sulfate
- Sodium sulfide
- Sodium sulfite
- Sodium tetrafluoroborate
- Sodium tetraphenylborate
- Sodium thiocyanate
- Sodium thiosulfate
- Sodium trimetaphosphate
- Sodium triphosphate
- Sodium tripolyphosphate
- Sodium tungstate
- Sodium zincate
- Sodium-24
- Sodium-ion batteries
- Sodium-ion battery
- Sodium-potassium alloy
- Sodium-potassium pump
- Sofosbuvir
- Soft chemistry
- Softening point
- Soil salinity
- Solar dryer
- Solar fuel
- Solar gain
- Solar thermal enhanced oil recovery
- Solder
- Solder alloys
- Solid acid
- Solid fuel
- Solid hydrogen
- Solid nitrogen
- Solid phase extraction
- Solid state ionics
- Solid state reaction route
- Solid state reactions
- Solid-phase extraction
- Solid-phase synthesis
- Solid-state battery
- Solid-state chemistry
- Solid-state electrolytes
- Solid-state reaction route
- Solketal
- Solubility
- Solubility equilibrium
- Solubility product
- Solubility table
- Solubilization
- Soluble guanylyl cyclase
- Solution polymerization
- Solvated electron
- Solvation
- Solvation shell
- Solvay process
- Solvent bonding
- Solvent casting and particulate leaching
- Solvent dyes
- Solvent effects
- Solvent exposure
- Solvent extraction
- Solvent models
- Solvents
- Solvolysis
- Solvothermal synthesis
- Solvus
- Sonochemistry
- Sonoelectrochemistry
- Sonogashira coupling
- SOP
- Sorbent tube
- Sorbic acid
- Sorbitan
- Sorbitan monostearate
- Sorbitol
- Sorbose
- Sorghum
- Sorption
- Sortase
- SOS response
- Sour crude oil
- Sour gas
- Southern Gas Corridor
- SOx
- Soxhlet extractor
- Soybean
- Specialty chemicals
- Specific rotation
- Specific ultraviolet absorbance
- Specificity constant
- Spectator ligand
- Spectrochemical series
- Spectroelectrochemistry
- Spectrophotometers
- Spectrophotometry
- Spent nuclear fuel
- Spermidine
- Spermidine synthase
- Sphingosine
- Spiegeleisen
- Spill containment
- Spin chemistry
- Spin contamination
- Spin crossover
- Spin label
- Spin states
- Spin trapping
- Spin-forbidden reactions
- Spiral separator
- Spirit lamp
- Spiro
- Spironolactone
- Spiropyran
- Spirotetramat
- Splicing
- Sponge iron
- Spontaneous combustion
- Spontaneous process
- Spring steel
- Squaraine dye
- Squaric acid
- SR
- SRM
- SSC buffer
- Stability constant
- Stabilizers
- Stacking
- Stagnation enthalpy
- Stagnation point
- Stagnation pressure
- Stagnation temperature
- Standard addition
- Standard hydrogen electrode
- Standard treatment
- Stanene
- Stannate
- Stannous chloride
- Star polymers
- Starch indicator
- Starch phosphorylase
- Starting materials
- State of charge
- Static mixers
- Static secondary-ion mass spectrometry
- Stationary phase
- Steam
- Steam cracking
- Steam explosion
- Steam reforming
- Stearic acid
- Stearoyl-coa 9-desaturase
- Steel
- Steel grades
- steel industry in China
- Steel wool
- Steglich esterification
- Stellite
- Step-growth polymerization
- Sterane
- Stereochemistry
- Stereoisomers
- Stereoselective
- Stereoselectivity
- Stereospecific
- Stereospecificity
- Steric factor
- Steric hindrance
- Steric strain
- Steroids
- Sterols
- Steviol
- Steviol glycoside
- Stibine
- Sticking coefficient
- Sticking probability
- Stiction
- Stigmasterol
- Stilbenoids
- Stille reaction
- Stimulant
- Stokes drift
- Stokes flow
- Stokes problem
- Stokes radius
- Stokes wave
- Stokes' law
- Stone Wales Defect
- Stone-wales defect
- Storm surge
- Strain energy
- Strained silicon
- Strategic approach to international chemicals management
- Strecker degradation
- Streptomycin
- Streptozotocin
- Strip steel
- Stripper wells
- Stripping
- Strong electrolyte
- Strontium
- Strontium aluminate
- Strontium bromide
- Strontium carbonate
- Strontium nitrate
- Strontium oxalate
- Strontium oxide
- Strontium Ranelate
- Strontium titanate
- Strontium-87
- Strontium-90
- Structural chemistry
- Structural formula
- Structural isomers
- Structural unit
- Stubble burning
- Styrene
- Styrene oxide
- Styrene-butadiene
- SU-8
- SU-8 photoresist
- Sub-sampling
- Subcutaneous administration
- Suberin
- Sublimation
- Sublingual
- Submarine groundwater discharge
- Suboxides
- Substances of very high concern
- Substituent
- Substitute natural gas
- Substituted benzofuran
- Substitution
- Substitution reactions
- Substrate
- Substrate analog
- Substrate channeling
- Subtilisin
- Succinaldehyde
- Succinate
- Succinate dehydrogenase
- Succinic acid
- Succinic anhydride
- Succinimide
- Sucker rod
- Sucrase
- Sugar alcohols
- Sugar phosphates
- Sulbactam
- Sulfadoxine
- Sulfamate
- Sulfamic acid
- Sulfanilic acid
- Sulfapyridine
- Sulfate minerals
- Sulfenamide
- Sulfenic acid
- Sulfidation
- Sulfide minerals
- Sulfide stress cracking
- Sulfinamide
- Sulfite
- Sulfite oxidase
- Sulfobetaine
- Sulfolane
- Sulfonates
- Sulfonation
- Sulfones
- Sulfonic acid
- Sulfonium
- Sulfonyl
- Sulforaphane
- Sulforhodamine 101
- sulforhodamine B
- Sulfosalt minerals
- Sulfosalts
- Sulfotep
- Sulfotransferase
- Sulfoxide
- Sulfur compounds
- Sulfur dichloride
- Sulfur dioxide
- Sulfur hexafluoride
- Sulfur isotopes
- Sulfur oxide
- Sulfur trioxide
- Sulfur vulcanization
- Sulfur-35
- Sulfuric acid
- Sulfurous acid
- Sulfuryl chloride
- Sulindac
- Sun exposure
- Sun spots
- Sunflower
- Sunflower oil
- Sunscreen
- Superabsorbent polymer
- Superacids
- Superatom
- Supercavitation
- Superconducting wire
- Supercritical
- Supercritical carbon dioxide
- Supercritical flow
- Supercritical fluid
- Supercritical fluid chromatography
- Supercritical water oxidation
- Superfluidity
- Superfluids
- Superheated steam
- Superheated water
- Superheavy elements
- Superhydrophilic
- Superhydrophilicity
- Superhydrophobic
- Superose
- Superoxide
- Superoxide dismutase
- Superphosphate
- Supporting electrolyte
- Supramolecular chemistry
- Supramolecular polymers
- Surface conductivity
- Surface growth
- Surface tension
- Surfactants
- Suspended solids
- Suspension polymerization
- Sustainable agriculture
- Suzuki reaction
- Sweet crude oil
- Sweeteners
- Swell
- Swells
- Swern oxidation
- Sybr Green
- Symbol
- Symmetry operation
- Sympathetic detonation
- Syneresis
- Syngas
- Syngenite
- Synthetic crude
- Synthetic dyes
- Synthetic fuel
- Synthetic jet
- Synthetic membranes
- Synthetic musk
- Synthetic natural gas
- Syringaldehyde
- Syringol
- Syrup
- Systemic administration
- Szeged index
- T7 RNA polymerase
- T790m
- Tacrine
- Tacrolimus
- Tacticity
- TAE buffer
- TAED
- Tafel equation
- TAN
- Tandem catalysis
- Tandem mass spectrometry
- Tank trucks
- Tanker trucks
- Tannase
- Tannery
- Tannic acid
- Tannin
- Tanning
- Tantalum
- Tantalum carbide
- Tantalum pentoxide
- Tap water
- TaqMan
- Tar
- Targeted therapy
- Tartaric acid
- Tartrate
- Tartrate-resistant acid phosphatase
- Tartrazine
- Tartronic acid
- TATB
- Taurine
- Tautomers
- Taxane
- Taxifolin
- Taylor cone
- Taylor Microscale
- Tazobactam
- TBHQ
- TBS
- TC
- TCD
- TCEP
- TDCPP
- TDF
- TDS
- Tebuconazole
- Tebuthiuron
- Technetium
- Technetium-99
- Technetium-99m
- Technical-grade
- Tedlar
- Teflon
- Teichoic acid
- Telaprevir
- Telluride
- Tellurite
- Tellurium
- Tellurium dioxide
- Telomerase
- Telomerization
- Temperature jump
- Temperature-programmed reduction
- Tempered glass
- Tenofovir
- Tensiometers
- Terbium
- Terbium gallium garnet
- Terbium oxide
- Terbufos
- Terephthalic acid
- Terfenol-d
- Terminal velocity
- Terpenes
- Terpenoids
- Terphenyl
- Terpinen-4-ol
- Terpinene
- Terpineol
- Terpyridine
- Tert-amyl alcohol
- Tert-amyl methyl ether
- Tert-butyl
- Tert-butyl alcohol
- Tert-butyl hydroperoxide
- Tert-butyl hypochlorite
- Tert-butylamine
- Tert-butylbenzene
- Tert-butylhydroquinone
- Tertiary carbon
- Test tube
- Tetraborate
- tetrabromobisphenol A
- Tetrabromoethane
- Tetrabutylammonium
- Tetrabutylammonium bromide
- Tetrabutylammonium chloride
- Tetrabutylammonium hexafluorophosphate
- Tetracalcium phosphate
- Tetracene
- Tetrachloroethylene
- Tetracosane
- Tetracyanoquinodimethane
- Tetracycline antibiotics
- Tetracyclines
- Tetradecane
- Tetradentate
- Tetraethyl orthosilicate
- Tetraethylammonium
- Tetraethylammonium bromide
- Tetrafluoroethylene
- Tetrafluoromethane
- Tetrahedral intermediates
- Tetrahydrocannabinol
- Tetrahydrofolic acid
- Tetrahydrofuran
- Tetrahydrofurfuryl alcohol
- Tetrahydroisoquinoline
- Tetrahydromethanopterin
- Tetrahydropyran
- Tetrahydroquinoline
- Tetrahydrothiophene
- Tetrakis(hydroxymethyl)phosphonium chloride
- Tetralin
- Tetramers
- Tetramethyl lead
- Tetramethyl orthosilicate
- Tetramethylammonium
- Tetramethylammonium hydroxide
- Tetramethylethylenediamine
- Tetramethyllead
- Tetramethylsilane
- Tetraoctylammonium bromide
- Tetraphenylborate
- Tetraphenylphosphonium chloride
- Tetraphenylporphyrin
- Tetrapyrroles
- Tetrasodium pyrophosphate
- Tetrazine
- Tetrazole
- Tetryl
- Thallium
- Thallium bromide
- Thallium iodide
- Thallium oxide
- Thallium-201
- Thallium(iii) oxide
- Thaumatin
- Thebaine
- Theoretical oxygen demand
- Theoretical plates
- Thermal boundary layer
- Thermal decomposition
- Thermal degradation
- Thermal degradation of polymers
- Thermal desorption spectroscopy
- Thermal entrance length
- Thermal hydrolysis
- Thermal ionization
- Thermal mass flow meter
- Thermal maturity
- Thermal oxidizer
- Thermal runaway
- Thermite
- Thermobaric
- Thermochemical cycles
- Thermochemistry
- Thermodynamic activity
- Thermodynamic integration
- Thermohaline circulation
- Thermolysin
- Thermoplastic elastomer
- Thermoplastic olefin
- Thermoplastic polyurethane
- Thermoplastic vulcanizates
- Thermosets
- Thermosetting polymer
- Thiadiazoles
- Thiamethoxam
- Thiamine
- Thiamine pyrophosphate
- Thiazide
- Thiazine
- Thiazole
- Thiazolidine
- Thiazoline
- Thickeners
- Thickening agents
- Thidiazuron
- Thiele modulus
- Thienothiophene
- Thio
- Thiocarbamate
- Thiocyanate
- Thioesters
- Thioethers
- Thioglycolic acid
- Thioketones
- Thiol-ene reaction
- Thiols
- Thionyl chloride
- Thiophanate-methyl
- Thiophene
- Thiophenol
- Thiopurine methyltransferase
- Thiopyran
- Thioredoxin reductase
- Thiosemicarbazide
- Thiosulfate
- Thiourea
- Third phase
- Third-hand smoke
- Thiuram disulfide
- Thiyl radicals
- Thorium
- Thorium dioxide
- Thorium fuel cycle
- Thorium tetrafluoride
- Thorium-230
- Thoron
- Threonine protease
- Thrombin
- Thujene
- Thulium
- Thulium oxide
- Thymidine kinase
- Thymidine phosphorylase
- Thymidylate synthase
- Thymol
- Thymol blue
- Thymolphthalein
- Thymoquinone
- Thyroid peroxidase
- Ti-10V-2Fe-3Al
- Ti-6Al-2Sn-4Zr-2Mo
- Ti-6Al-4V
- Tialn
- Tidal bore
- Tight gas
- Tight oil
- Time of flight
- Time temperature indicator
- Time-of-flight mass spectrometry
- Time-temperature superposition
- Timolol
- TIMS
- Tin
- Tin chloride
- Tin dioxide
- Tin oxide
- Tin selenide
- Tin sulfate
- Tin-silver-copper
- Tin(iv) chloride
- Tinidazole
- Tinker
- Tiopronin
- Tirapazamine
- Tissue selectivity
- Titanate
- Titanium
- Titanium alloy
- Titanium alloys
- Titanium aluminide
- Titanium aluminium nitride
- Titanium butoxide
- Titanium diboride
- Titanium dioxide
- Titanium dioxide nanoparticle
- Titanium ethoxide
- Titanium hydride
- Titanium isopropoxide
- Titanium powder
- Titanium silicon carbide
- Titanium tetrachloride
- Titanocene dichloride
- Titanyl sulfate
- Titration
- Titration curve
- TLC
- TMEDA
- TNT
- TNT equivalent
- Tobacco
- Tobacco control
- Tobacco smoke
- Tobermorite
- TOC
- Tocopherol
- Tocotrienol
- Tolerance
- Tolidine
- Tollens' reagent
- Toluene
- Toluene diisocyanate
- Toluene dioxygenase
- Toluidine
- Toluidine blue
- Tool steel
- Toothpaste
- Topical
- Topoisomerase
- Topoisomerase II
- Topoisomerase inhibitor
- Topoisomerase IV
- Topological index
- Topotactic
- Topotecan
- Tosylate
- Total base number
- Total carbon
- Total inorganic carbon
- Total synthesis
- Towel
- Toxic
- Toxicant
- Toxicity
- Toxins
- TPH
- TPO
- Trace elements
- Trace gases
- Tragacanth
- Trans effect
- Trans fats
- trans-activating crRNA
- Transalkylation
- Transamidation
- Transaminase
- Transaminases
- Transamination
- Transdermal patches
- Transesterification
- Transfer hydrogenation
- Transferability
- Transformer oil
- Transglutaminase
- Transient state
- Transition metal dichalcogenides
- Transition metals
- Transition point
- Transition state
- Transition state theory
- Translucency
- Transparency
- Transparent
- Transparent ceramics
- Trash rack
- Trastuzumab emtansine
- Treatment-resistant depression
- Trehalase
- Triacetin
- Triazine
- Triazole
- Tributyl phosphate
- Tributylamine
- Tributyltin
- Tributyltin oxide
- Tricalcium aluminate
- Tricalcium phosphate
- Tricarboxylic acid
- Trichlorfon
- Trichloroacetic acid
- Trichlorobenzene
- Trichloroethylene
- Trichlorofluoromethane
- Trichlorophenol
- Trichlorosilane
- Trichostatin A
- Trichothecenes
- Tricine
- Trickle-bed reactor
- Triclocarban
- Triclopyr
- Triclosan
- Tricresyl phosphate
- Tricyclic
- Tricyclic antidepressants
- Tridentate
- Tridentate ligand
- Triethanolamine
- Triethoxysilane
- Triethyl citrate
- Triethyl phosphate
- Triethyl phosphite
- Triethylamine
- Triethylborane
- Triethylene glycol
- Triethylenetetramine
- Triethylphosphite
- Triethylsilane
- Triflic acid
- Trifluoperazine
- Trifluoroacetic acid
- Trifluoroacetic anhydride
- Trifluoroethanol
- Trifluoromethyl
- Trifluoromethyl group
- Trifluralin
- Trigonal planar
- Trihalomethanes
- Triiodide
- Trimer
- Trimethoprim
- Trimethyl borate
- Trimethylamine
- trimethylamine N-oxide
- Trimethylbenzene
- Trimethylene carbonate
- Trimethylgallium
- Trimethylglycine
- Trimethylolpropane
- Trimethylolpropane triglycidyl ether
- Trimethylsilyl
- Trimethylsilyl cyanide
- Trioctylamine
- Trioctylphosphine
- Trioctylphosphine oxide
- Trioctylphosphine selenide
- Triol
- Trioxane
- Trip steel
- Triphenyl phosphate
- Triphenylamine
- Triphenylene
- Triphenylmethane
- Triphenylphosphine
- Triphenylphosphine oxide
- Triphenylphosphine sulfide
- Triphosgene
- Triphosphoric acid
- Triple bonds
- Triple quadrupole mass spectrometer
- Triple-deck theory
- Triplet oxygen
- Triptane
- Triptans
- Tris
- Tris(2-chloroethyl) phosphate
- Trisodium citrate
- Trisodium phosphate
- Triterpenes
- Trithionate
- Triton X-100
- Tritonal
- Trituration
- Triuranium octoxide
- Troilite
- Trolox
- Tropane
- Tropical cyclones
- True vertical depth
- Trypan blue
- Trypsin
- Trypsin inhibitor
- Trypsinogen
- Tryptase
- Tryptophan
- Tryptophan hydroxylase
- Tryptophan synthase
- Tryptophanase
- Tube furnace
- Tungstate
- Tungsten
- Tungsten carbide
- Tungsten disulfide
- Tungsten hexacarbonyl
- Tungsten hexachloride
- Tungsten nitride
- Tungsten trioxide
- Tungstic acid
- Turbidity
- Turbophoresis
- Turbulence
- Turbulence modeling
- Turbulence models
- Turbulent diffusion
- Turmeric
- Turnover number
- Turpentine
- Tween 20
- Two-dimensional chromatography
- Two-dimensional flow
- Two-dimensional polymers
- Two-phase flow
- Tyloxapol
- type II topoisomerase
- Type metal
- Tyramine
- Tyrian Purple
- Tyrosinase
- Tyrosine
- Tyrosine aminotransferase
- Tyrosine kinase
- Tyrosine kinase 2
- Tyrosine kinase inhibitor
- Tyuyamunite
- U3O8
- Ubbelohde viscometer
- Ubiquinone
- Ubiquitin ligase
- UDMH
- UDP-glucose pyrophosphorylase
- UDP-glucuronosyltransferase
- UGT1A1
- UGT2B7
- Ullmann reaction
- ULSD
- Ultra-high-molecular-weight polyethylene
- Ultrafiltration
- Ultrapure water
- Ultrasonic impact treatment
- Umbrella sampling
- Unconventional oil
- Undecylenic acid
- Underground coal gasification
- Underpotential deposition
- Undertow
- Underwater
- Underwater environment
- Unresolved complex mixture
- Unsaturated
- Unsymmetrical dimethylhydrazine
- Untranslated region
- Upstream
- Uranium carbide
- Uranium compounds
- Uranium dioxide
- Uranium hexafluoride
- Uranium nitride
- Uranium oxide
- Uranium tetrafluoride
- Uranium trioxide
- Uranyl
- Uranyl acetate
- Uranyl carbonate
- Uranyl formate
- Uranyl hydroxide
- Uranyl nitrate
- Uranyl oxalate
- Uranyl peroxide
- Uranyl sulfate
- Urate oxidase
- Urban flooding
- Urea
- Urease
- Uric acid
- Uridine diphosphate
- Uridine monophosphate
- Urolithin
- Uronic acid
- Usnic acid
- UV degradation
- Vacuum filtration
- Vacuum furnace
- Valence
- Valence electrons
- Validation master plan
- Valproate
- Valproic acid
- van 't Hoff equation
- Van Deemter equation
- Van der Waals radius
- van Krevelen diagram
- Vanadate
- Vanadium dioxide
- Vanadium nitride
- Vanadium oxide
- Vanadium pentoxide
- Vanadium redox battery
- Vanadyl
- Vancomycin
- Vanilla extract
- Vanillin
- Vanilloid
- Vanillyl alcohol
- Vapor
- Vapor pressure osmometry
- Vapor quality
- Vapor recovery
- Vapor-liquid equilibrium
- Vaporization
- Vaporizer
- Variational transition-state theory
- Vat dyes
- Vectran
- Venom
- Venomous
- Venturi effect
- Verdigris
- Vermilion
- Versatile peroxidase
- Vertically aligned carbon nanotube arrays
- Vials
- Vinblastine
- Vinca alkaloids
- Vinclozolin
- Vinegar
- Vinyl acetate
- Vinyl alcohol
- Vinyl chloride
- Vinyl ester
- Vinyl ester resin
- Vinyl fluoride
- Vinyl group
- Vinyl halides
- Vinyl polymer
- Vinyl sulfone
- Vinylation
- Vinylene carbonate
- Vinylester
- Vinylidene chloride
- Vinylidene fluoride
- Vinylogous
- Vinylpyrrolidone
- Violacein
- Violaxanthin
- Viologen
- Virtual water
- Visbreaker
- Viscometer
- Viscous fingering
- Viscous liquids
- vitamin A
- vitamin B12
- vitamin B3
- vitamin B6
- vitamin C
- vitamin D
- Vitamin D deficiency
- Vitamin D toxicity
- Vitamin D-binding protein
- vitamin D3
- vitamin E
- Vitamin e acetate
- Vitamin K
- Vitamins
- Viton
- Vitrimers
- Vivianite
- VMD
- Voglibose
- Volatile
- Volatilisation
- Volatilization
- Voltaic piles
- Voltammetry
- Volume fraction
- Volumetric flask
- Volumetric flow rate
- Volute
- Vortex
- Vortex shedding
- Vortex sheet
- Vortex stretching
- Vortex-induced vibration
- Vorticity equation
- VRLA
- VRLA battery
- Vroman effect
- VSEPR theory
- VSS
- Vulcanization
- Wake
- Walnut
- Walsh diagrams
- Washburn's equation
- Waspaloy
- Waste oil
- Wastewater-based epidemiology
- Watch glass
- Water clarity
- Water clusters
- Water conflict
- Water conservation
- Water consumption
- Water content
- Water cycle management
- Water demand management
- Water dimer
- Water efficiency
- Water export
- Water footprint
- Water gas
- Water gas shift reaction
- Water management
- Water mass
- Water metering
- Water meters
- Water model
- Water pinch
- Water pinch analysis
- Water privatization
- Water pumping
- Water quality
- Water resources
- Water scarcity
- Water security
- Water splitting
- Water stress
- Water supply
- Water vapor
- Water-energy nexus
- Water-gas shift reaction
- Water-use efficiency
- Waterborne resins
- Wave base
- Wave height
- Wave shoaling
- Wave tank
- Wax esters
- Weak acids
- Weak base
- Well intervention
- Well stimulation
- Well testing
- Wet chemistry
- Wet gas
- Wetsuit
- Whirlpools
- White gold
- White metal
- White spirit
- Whole genome bisulfite sequencing
- Wien2k
- Wildfires
- Williamson ether synthesis
- Wind stress
- Wind wave model
- Winkler titration
- Withaferin a
- Wittig reaction
- Wobbe Index
- Wobble base pair
- Wood ash
- Wood fuel
- Wood gas
- Wood pellets
- Wootz steel
- Work-up
- Working electrode
- Working range
- World Water Forum
- Wrought iron
- X-gal
- Xanthan gum
- Xanthate
- Xanthine
- Xanthine dehydrogenase
- Xanthine oxidase
- Xanthine oxidase inhibitor
- Xanthone
- Xanthophyll
- Xantphos
- Xenon
- Xenon hexafluoroplatinate
- Xofigo
- Xylanase
- Xylene
- Xylenol
- Xylidine
- Xylitol
- Xylose
- Xylose isomerase
- Xylulose
- YBCO
- Yellowcake
- Yerba mate
- Ylides
- Young-Laplace equation
- Ytterbium
- Yttria
- Yttrium lithium fluoride
- Yttrium nitrate
- Yttrium-90
- Z-DNA
- Zamak
- Zearalanone
- Zearalenone
- Zeaxanthin
- Zein
- Zeldovich mechanism
- Zeolite membrane
- Zeotropic
- Zeotropic mixture
- Zeranol
- Zerovalent iron
- Zeta potential
- Ziconotide
- Ziegler-Natta catalysts
- Zinc
- Zinc acetate
- Zinc aluminium
- Zinc ammonium chloride
- Zinc borate
- Zinc bromide
- Zinc carbonate
- Zinc chloride
- Zinc chromate
- Zinc compounds
- Zinc deficiency
- Zinc dithiophosphate
- Zinc ferrite
- Zinc gluconate
- Zinc hydroxide
- Zinc iodide
- Zinc nitrate
- Zinc oxide
- Zinc oxide eugenol
- Zinc oxide nanoparticle
- Zinc phosphate
- Zinc phosphide
- Zinc protoporphyrin
- Zinc pyrithione
- Zinc stearate
- Zinc sulfate
- Zinc titanate
- Zinc-carbon battery
- Zinc-cerium battery
- Zincate
- Zintl phases
- Ziram
- Zircaloy
- Zirconate
- Zirconium
- Zirconium alloys
- Zirconium diboride
- Zirconium hydride
- Zirconium hydroxide
- Zirconium nitrate
- Zirconium silicate
- Zirconium tetrachloride
- Zirconocene dichloride
- ZnO nanostructures
- Zwitterions
- Zylon
- Zymase
- Zymolyase
- α-tocopherol
- β-lactam antibiotics
- Γ-aminobutyric acid
- δ15n
- δ18o