Trinitrobenzoic acid , decomposition

In consequence of such drastic conditions of nitration several side reactions of oxidation and break-down processes take place, giving rise to the products mentioned above (trinitrobenzoic acid, trinitrobenzene, tetranitromethane). A decomposition reaction (p, 76) also gives off a large volume of carbon monoxide, which may form an explosive mixture with air. Several explosions of such mixtures have been described. 

Other decarboxylations are noteworthy. Thermal decomposition of 2,4,6-trinitrobenzoic acid furnishes 1,3,5-trinitrobenzene in 46% yield. In an adaptation of a procedure for the decarboxylation of halogenated furoic acids with boiling quinoline and powdered copper, 2- and 3-nitro-benzofuran are prepared from nitro acids and 5-nitrothionaphthene is formed from the corresponding 2-carboxylic acid. ... 

Light and heat and can cause decomposition. May react violently or form sensitive explosive compounds with 2-butyne-l,4-diol, fluoroacetylene, a-nitroguanidine, 5-nitrotetrazol, and others. Incompatible with ammonia, hydrozoic acid, methyl isocyanoacetate, sodium acetylide, sodium peroxyborate, trinitrobenzoic acid, urea nitrate. 

MERCURY SUBCHLORIDE (10112-91-1 7546-30-7) see mercurous chloride. MERCURY(II) SULFATE (7783-35-9) HgS04 Noncombustible solid. Reacts with water, forming an insoluble mercury and sulfuric acid. Light may cause slow decomposition. Incompatible with aluminum, ammonia, hydrozoic acid, magnesium, methyl isocyanoacetate, sodiiun acetylide, sodium peroxyborate, red phosphorus, trinitrobenzoic acid, urea nitrate, powdered zirconium. Reacts violently with gaseous hydrogen chloride above 250°F/121°C. Attacks metals in the presence of moisture. On small fires, use dry chemical powder (such as Purple-K-Powder), water spray, or CO2 extinguishers. 

CARBONATO de PLOMO (Spanish) (598-63-0) Contact with hot water, acids, acid fumes, or lead oxide causes decomposition with formation of carbon dioxide. Incompatible with acids, ammonia, fluorine, germanium, hydrozoic acid, lead diacetate, magnesium, mercurous chloride, methyl isocyanoacetate, silver nitrate, sodium peroxyborate, titanium, trinitrobenzoic acid, urea nitrate. 

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