CHEN 3401W Lecture Notes - Lecture 13: Ammonium Nitrate, Deflagration, Flash Point
7 May 2015
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Dangerous when exposed to shock, could explode or decompose decompose. Lethal shock wave, extreme heat, flame, explosive gas. The more stable, the more abuse it can take, and vice versa. Detonation: extremely rapid and violent decomposition of a material; produces destructive shockwave speed of sound = 1250 m/s detonation = 3000-30000 m/s --> supersonic picric acid. 24000 ft/s detonation high pressure shockwave radiates in all direction equally. Deflagration: very rapid, violient decomposition w/ flame, heat, and gas; very rapid burning. Ether: forms unstable explosive peroxides as it ages; also flamable. Triethyl aluminum: pyroforic: spontaneously ignites and burns when exposed to air. If fuel is present, supplies oxygen for burning. Hydrogen peroxide - in industry, can have concentration of max 98% Can combine w/ material and burn or form explosive. Ammonium nitrate: used as fertilizer; can be contaminated if packaging is damaged --> more dangerous.
