The Picric acid is the Explosif, initially produced by the industry of the dyes, which was used in the Obu S at the time of the First World War. While being degraded (Crystallization), for example in a not exploded Ammunition, and/or in contact with metals of the envelope of the Ammunition or other metals, the picric acid produces metal salts known as picrates , very unstable, toxic and likely of violently and spontaneously to explode with heat or during a simple friction.
Picrates are for the majority even more sensitive and explosives that the picric acid itself. Picrates are formed for example in contact with copper, nickel, cadmium, lead, iron and zinc.) but also in contact with metal salts, of ammonia, bases, and the concrete (via the calcium picrate).
It is one of the causes of the dangerosity of the old ammunition, even immersed, because the picric acid remains flammable, toxic and dangerous in water (wet with more than water 30%).
Familiarly, a picrate is a red wine of very bad quality, rather acid.
Related articles
External bonds
- Card of the Picric acid Canadian government/Picrates
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