Mercuric fulminate properties

Silver fulminate is dimeric and rather endothermic (A+361.5 kJ/dimol, 1.21 kJ/g). It is readily formed from silver or its salts, nitric acid and ethanol, and is a much more sensitive and powerful detonator than mercuric fulminate [1], The properties and applications have been reviewed [2],... 

Extensive experiments by Kocster (50] on the initiating properties oi mercuric fulminate are given in Table 72. 

Koesier also examined the influence of the metal ca.sing on the initiation properties of mercuric fulminate. The critical charge was found to be smaller... 

Silver acetyUde. Although silver acetylide has not received practical appli cation it has been the subject of a few published papers. Stcttbacher [165] was first to draw attention to the very strong initiating properties of silver acetylide. He found that th initiating charge is 0.07 g (for AgNj and mercuric fulminate he found figures of 0.02 g and 0.29 g respectively). 

Meisenheimer o-complexcs 98-104 Meisenheimer reaction 97 Mercuric fulminate 462.464-469 (III/I29. 134. 135-1.36) action of liglil on 467 behaviour at low temperature 467 burning under reduced pressure 468 chemical properties of 466 (111/139-141)... 

Burningof in under reduced pressure Mercuric fulminate Physical properties Chemical properties... 

Burning under reduced pressure Initiating properties of mercuric fulminate Other salts of fulminic acid Manufacture of mercuric fulminate Esters of fulminic acid I lydra >ic acid, its derivatives and salts Decomposition of azides HctcrtK yclics from azides Other react ions of azide anion amt radical Some organic azides Danger of handling a/ides Cyanic triazide... 

Fulminic Acid, C=N--OH.—Salts of this acid are obtained when nitric acid, alcohol, and mercury or silver are brought together in certain proportions. Mercuric fulminate, (CNO)2Hg, is prepared for use in percussion caps, which are used to explode gunpowder, dynamite, and other explosives. Free fulminic acid is a very unstable volatile liquid. It resembles closely hydrocyanic acid in odor and poisonous properties. 

Clark [35] investigated the initiating properties of mercuric fulminate at different temperatures 25°, 80° and - 183°( to test the applicability tif... 

Mercury fulminate (C2N202Hg) is one of the most important primary explosives. It is usually found in the form of a gray powder, is sensitive to impact and friction, and is easily detonated by sparks and flames. It is desensitized by the addition of water, but is very sensitive to sunlight. It reacts with metals in moist environments. It is created by treating a solution of mercuric nitrate with alcohol in nitric acid. Its most important explosive property is that it easily detonates after initiation.10... 

Fulminic acid can be regarded as the simplest oxime. A number of compounds with an oxime group C=NOH can form salts which possess initiating properties, for example salts of nitroformoxime (methylnitrolic acid) (I) which can be obtained in a known way by the action of nitrous acid on nitromethane. Salts of form-hydroxamic acid (II), particularly the mercuric salt, also possess initiating properties [66]. Formhydroxamic acid can be obtained by the action of hydroxylamine on formic acid esters or by oxidation of methylamine. 

Up to this time primers had fallen into three categories mercuric and corrosive, nonmercuric but corrosive, and mercuric but noncorrosive. Because of the disadvantages of mercury fulminate and potassium chlorate the main objective of primer development was to produce a primer with satisfactory ignition properties without the use of these two compounds. An early NCNM priming composition used copper ammonium nitrate to replace mercury fulminate, and potassium nitrate to replace potassium chlorate. The composition was ... 

Kekule incorrectly represents fulminic acid as a nitro-compound, Cg(N04)(C2N)H2, which explains its explosive properties. He found that mercury fulminate treated with chlorine gas forms chlorpicrin, cyanogen chloride, and mercuric chloride ... 

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