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Carboxylic Acids, Carboxylic Acid Derivatives, and Acyl Substitution Reactions
Published in Michael B. Smith, A Q&A Approach to Organic Chemistry, 2020
The nomenclature system described in the preceding question is for acyclic amides (the -CON unit is not part of a ring). If pentanoic acid is the parent, replacing the -OH with NR2 leads to dropping the -oic acid and replacing it with amide. If the common name of the acid is used (such as acetic acid), the -ic acid is dropped and replaced with amide. The NH2 amide of acetic acid is, therefore, ethanamide or acetamide (CH3CONH2). What is the nomenclature protocol when substituents appear on the nitrogen of an amide?
List of Chemical Substances
Published in T.S.S. Dikshith, and Safety, 2016
Acetamide occurs as hexagonal, colorless deliquescent crystals with a musty odor. It is incompatible with strong acids, strong oxidizing agents, strong bases, and tribolumi-nescent. Acetamide is used primarily as a solvent, as a plasticizer, and a wetting and penetrating agent. Workplace exposures to acetamide are associated with the plastics and chemical industries.
An experimental investigation on solar powered solid desiccant air conditioning (SPSDAC) based on regenerative evaporative cooling system with PCM unit
Published in International Journal of Ambient Energy, 2021
The dimensions of the SPSDAC with PCM storage has been mentioned in Figure 3. Figure 4 delineates the photo of the SPSDAC with PCM storage. The collector area of the ETSAC is 4.44 m2. Evacuated tubes employed in collector which is composed of 2 co-axial glass tubes. The external tube is translucent, which empowers the solar radiations to pass through with least reflection. The external plane of the internal tube is secured with a specific covering of aluminium nitride (Al-N/Al) to retain the solar radiation and convert it into heat energy. The annular space between the two glass tubes is emptied to fabricate a vacuum that works as an insulation. The evacuated tube is 1.5 m long and outer diameters of the external and internal tubes are 0.047 and 0.037 m, respectively. The header with two mild steel rectangular boxes as appeared in Figure 5 are utilised. There are 20 holes on either side of the outer rectangular box (ORB) in which open ends of the evacuated tubes are attached while the closed ends of the evacuated tubes are hold up by the frame. The inner rectangular box (IRB) comprises of a mild steel empty pipe (diameter of 0.075 m) at the centre and the annular gap between them is stuffed with 50 kg weight of acetamide (PCM). The collector is tilted with an angle of 15° to the horizontal towards the south. The two aluminium sheets (1.56 m × 1.18 m) having a reflectivity of eighty percent are used as reflectors beneath the evacuated tubes. A hundred litres of water are utilised in the test setup and goes about as an operating liquid for heat exchange. It stores heat through solar radiations which are then exchanged through PCM with the air moving through the empty round pipe (hollow circular pipe). A blower (350 W) is employed to drive the air throughout the empty round pipe (hollow circular pipe). The acetamide utilised as PCM has a melting point of 81°C. The density of acetamide in solid and liquid phase are 1159 and 998 kg/m3, respectively. Wherease the heat of fusion and specific heat of PCM are 263 and 1.94 kJ/kg°C, respectively, with thermal conductivity of 0.5 W/m°C, Mehla and Yadav (2017a).