Ammonium bromide
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Ammonium bromide, NH4Br, is the ammonium salt of hydrobromic acid. The chemical crystallizes in colorless prisms, possessing a saline taste; it sublimes on heating and is easily soluble in water. Ammonium bromide is used for photography in films, plates and papers, in fireproofing of wood, in lithography and process engraving, in corrosion inhibitors, fireproofing of wood, and in pharmaceutical preparations.