Silver chloride fulminate

Silver Nitride. (Fulminating Silver). Ag3N, mw 337.65, N4.15%, blk-grey powd, mp 25° (start of decompn), d 9.0 lg/cc at 19°. Sol in weak acids, si sol in aq ammonia sol in aq solns of Na chioride and K cyanide. Prepd by treating aq Ag oxide with aq ammonia soln, or by heating coned ammoniacal Ag chloride with solid KOH until evolution of ammonia ceases. The thoroug-ly washed product must be stored under w and, even so, is sensitive to touch (Refs 1—7)... 

Exposure of ammoniacal silver chloride solutions to air or heat produces a black crystalline deposit of fulminating silver , mainly silver nitride, with silver diimide and silver amide also possibly present [1], Attention is drawn [2] to the possible explosion hazard in a method of recovering silver from the chloride by passing an ammoniacal solution of the chloride through an ion exchange column to separate the Ag(NH3)+ ion, prior to elution as the nitrate [3], It is essential to avoid letting the ammoniacal solution stand for several hours, either alone or on the column [2], See Silver nitride... 

While still moist the bulk of the material is transferred to a test tube even in the moist condition pressing with a metal spatula or other hard object is to be avoided. Then 2 c.c. of concentrated hydrochloric acid are poured into the test tube, when the odour of free fulminic acid can be perceived. This odour so closely resembles that of hydrocyanic acid as to make confusion possible. After half an hour the contents of the test tube are heated for a short time in the boiling water bath, 4 c.c. of water are added, silver chloride is removed by filtration, and the filtrate is evaporated to dryness on... 

Fire or explosion hazard may arise from the foUowing ammonia reactions Reaction with halogens produces nitrogen trihahdes which explode on heating its mixture with fluorine bursts into flame reacts with gold, silver, or mercury to form unstable fulminate-type shock-sensitive compounds similarly, shock-sensitive nitrides are formed when ammonia reacts with sulfur or certain metal chlorides, such as mercuric, or silver chloride liquid ammonia reacts violently with alkah metal chlorates and ferricyanides. 

Silver compounds Silver and silver compounds are used extensively in industries and the compounds include silver carbonate (Ag2C03), silver chloride (AgCl), silver fulminate (Ag ONC), silver iodide (Agl), silver nitrate (AgNOj), silver sulfide, and silver oxide. 

The analysis of simple fulminate-chlorate mixtures may be effected by extraction either with water or with pyridine. In the former method the mixture ts digested with c

mercury fulminate is dried at 50 for three hours and weighed. Some fulminate dissolves in the water. This is estimated by precipitation as sulphide. The chlorate may also be determined in the filtrate. The solution t boiled with nitric acid and tlwn treated with fbrntaldehyde and silver nitrate. Silver chloride is precipitated and the estimation may be made gravimetrically or by Vol hard s method. 

See FULMINATING METALS, SILVER-CONTAINING EXPLOSIVES, TOLLENS REAGENT See also Silver chloride Ammonia... 

Croll is credited with being the first to mention the explosive fulminate of gold and with having given the name of lima, cornea, horn silver, to the fused chloride of silver. Kopp also credits to him the first announcement of the acid from amber (succinic acid) fios succinii. ... 

In the Journal de physique for 1779 the apothecary, Bayen, described a fulminating mercurial preparation of another kind. Thirty parts of precipitated, yellow oxide of mercury, washed and dried, was mixed with 4 or 5 parts of sulfur the mixture exploded with violence when struck with a heavy hammer or when heated on an iron plate. Other mixtures which react explosively when initiated by percussion have been studied more recently,2 metallic sodium or potassium in contact with the oxide or the chloride of silver or of mercury or in contact with chloroform or carbon tetrachloride. 

Action of ammonia or ammonium salts on gold chloride, oxide or other salts under a wide variety of conditions gives explosive or fulminating gold [1], Of uncertain composition but containing Au—N bonds, this is a heat-, friction- and impact-sensitive explosive when dry, similar to the related mercury and silver compounds [2]. In an attempt to precipitate finely divided gold from its solution in aqua regia... 

SAFETY PROFILE Experimental reproductive effects. Human mutation data reported. Reaction with ammonia or ammonium salts yields fulminating gold, a heat-, friction-, and impact-sensitive explosive similar to mercury and silver fulminates. See also GOLD COMPOUNDS and CHLORIDES. When heated to decomposition it emits toxic fumes of CT. 

Very dangerous fire hazard when exposed to heat, flame, or oxidizers. Moderately explosive when exposed to heat or flame. Explodes on contact with oxygen difluoride nitrogen trichloride bromine pentafluoride chlorine trifluoride dichlorine oxide silver fulminate. Potentially explosive reaction with copper + oxygen. Explosive reaction when heated with perchloryl fluoride (above 100°C), oxygen (above 280°C). Reacts with 4-bromobenzenediazonium chloride to form an explosive product. 

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