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Terms and Definitions
Published in Rick Houghton, William Bennett, Emergency Characterization of Unknown Materials, 2020
Rick Houghton, William Bennett
Pyrophoric materials will burn when exposed to air. Self-heating materials will react when exposed to air without an external energy source. These materials are also referred to as spontaneously combustible. The flame of some pyrophoric materials is clear and not readily visible.
Physical Hazard Characterization
Published in George G. Lowry, Robert C. Lowry, Handbook of Hazard Communication and OSHA Requirements, 2017
George G. Lowry, Robert C. Lowry
A pyrophoric material is a substance that will ignite spontaneously in air at temperatures below 130°F (54°C). Examples include white phosphorus and some catalysts used in the chemical and petroleum processing industries.
Oxidizing-gas-based passivation of pyrophoric iron sulfides
Published in Chemical Engineering Communications, 2021
Zhan Dou, Shuoxun Shen, Juncheng Jiang, Zhirong Wang, Xu Diao, Qiang Chen
Pyrophoric materials are chemical liquids or solids that, even in small quantities and without an external ignition source, can ignite spontaneously within 5 min or below 55 °C after their exposure to air (Averill et al. 2015; Merzbacher 2002; Davie et al. 1993a, 1993b). One of the common pyrophoric materials is a mixture of pyrophoric iron sulfides, which are widely distributed in the petroleum, petrochemical, and chemical industries, and they are especially used in typical equipment, such as natural gas pipelines, crude oil tanks, asphalt tanks, sour water tanks, vessels for sour service (like coke drums, distillation columns, inlet separators, and pig receiver/launchers), API separators, marine tankers and barges, potable tanks, and tote bins (Enning and Garrelfs 2014; Garcia-Labiano et al. 2014; Watanabe et al. 2000; Schmidt and Kaminsky 2001; Plellis-Tsaltakis 2012, 2015; Bertani et al. 2016; Walker et al. 1997; Hughes et al. 1974).