Ammonium Bichromate

Chemical Designations - Synortyms Ammonium Bichromate Chemical Formula (NH4)2Cr20,. Observable Characteristics - Physical Stale (as normally shipped) Solid Color Orange-yellow bright red-orange orange to red Odor None. 

J (Poudre de chasse) A French smokeless sporting propint invented by Bruneau and manufd before WWI. It contained NC 83 ammonium bichromate 17%. It replaced poudre pyroxyle type S Refs 1) Daniel (1902), p 385 2) Pascal... 

Ammonium nitrate, Aluminum powder, Polyester resin, Ammonium bichromate, Charcoal powder Silver perchlorate, 5-Aminotetrazole, Perchloric acid Glycerin, Potassium permanganate Potassium permanganate, Glycerin Silver nitrate, Nitric acid, Ethanol Silver nitrate, Nitric acid, Ethanol... 

Synonym Ammonia Water Amfbnioformaldehyde Ammonium Acetate Ammonium Acid Fluoride Ammonium Amidosulfonate Ammonium Amidosulphate Ammonium Benzoate Ammonium Bicarbonate Ammonium Bichromate Ammonium Bifluoride Ammonium Carbonate Ammonium Chloride Ammonium Citrate Ammonium Citrate, Dibasic Ammonium Decaborate Octahydrate Ammonium Dichromate Ammonium Disulfate-Nickelate (II) Ammonium Ferric Citrate Ammonium Ferric Oxalate Trihydrate Ammonium Ferrous Sulfate Ammonium Fluoride Ammonium Fluosilicate Ammonium Formate Ammonium Gluconate Ammonium Hydrogen Carbonate Ammonium Hydrogen Fluoride Ammonium Hydrogen Sulfide Solution Ammonium Hydroxide Ammonium Hypo Ammonium Hyposulfite Ammonium Iodide Ammonium Iron Sulfate Ammonium Lactate Ammonium Lactate Syrup Ammonium Lauryl Sulfate Ammonium Molybdate Ammonium Muriate Ammonium Nickel Sulfate Ammonium Nitrate Ammonium Nitrate-Urea Solution Ammonium Oleate... 

A different type of ammonium powder containing ammonium bichromate was. also used to activate the Williams and James reciprocating engine. 

The new propellant was promising but the nitrocellulose smokeless powder invented soon afterwards superseded all mixtures containing potassium nitrate and similar salts, that give a number of solid particles when exploded. For a time in the United States various mixtures were still used instead of blackpowder—chiefly for sporting purposes. E.g. Gold Dust Powder (Starke [36]) consisted of 55% ammonium picrate, 25% potassium picrate and 20% ammonium bichromate. Soon, however, early in the nineteenth century, the use of these mixtures was discontinued. 

Ammonium Bichromate(Dichromate). See under Chromates, Bichromates, etc Ammonium Borate. See under Borates Ammonium Bromate, See under Bromates Ammonium Carbamotes. See under Carbamate Ammonium Corbonote. See under Carbonates Ammonium Chlorate. See under Chlorates Ammonium Chloride. See under Chlorides Ammonium Chromate. See under Chromates Ammonium Cobaltlc Hexanitrate. See Ammonium Hexanitrocobaltate... 

Ammonium bichromate, (NH4)2Cr207, begins to undergo decomposition at a temperature over 100°C, and explodes at 240°C. Its explosive decomposition proceeds in accordance with the equation ... 

Noteworthy properties were discovered in ammonium trichromate (NH4)3Cr3O10, produced while crystallizing ammonium bichromate from nitric acid, d = 1.39 (Siewert [47]). At 190°C the compound undergoes explosive decomposition, evolving nitric oxide and nitrogen dioxide. 

Ammonium Bichromate, Analytical Procedures. Accdg to Taylor and Rickenbach(See Ref lb), above, the methods of its analysis are identical with those of K dichromate, except that the total ammonia shoiid be detd by the Kjeldahl method. See also under Ammonium Chromate and US Federal Specification 0-A-498a Barium Dfchromate, BaCr207, mw 353.38 red, monocl crysts mp ( ) sol in hot coned H2SOa decompd by w. Can be prepd by action of a soln of chromic acid on freshly pptd Ba... 

According to Rosser, Inami and Wise [741 ammonium bichromate, soluble in molten ammonium nitrate, was found to bo a catalyst of the decomposition of ammonium nitrate at temperatures 460-520 K. For low concentration of the catalyst the principal products of decomposition were Nj. N2O, HjO. HN03. The catalysed decomposition was inlubited by ammonia and water, promoted by nitric acid. 

Derivation Addition of ammonium hydroxide to a solution of ammonium bichromate, recovery by crystallization. 

AMMONIUM BICHROMATE (7789-09-5) Combustible solid. A strong oxidizer. Reacts violently with reducing agents, combustibles, bases, sodium nitrite. Decomposes at about 356°F/180°C, self-sustaining at about 1300°F/704°C heat causes material to expand dramatically with evolution of heat and nitrogen oxides swelling may cause closed container to burst explosively. Solution is acidic. Acids are incompatible with sulfuric acid, caustics, ammonia, aliphatic amines, alkanolamines, amides, organic anhydrides, isocyanates, vinyl acetate, alkylene oxides, epichlorohydrin. Attacks metals in the presence of moisture. 

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