Ammonium bromide is a kind ofinorganic compound, the molecular formula is NHfourBr，Colorless or white crystalline powder.Sublimate at 452 ℃ under normal pressure or 235 ℃ in vacuum.[1]Micro particles in the airHygroscopicity。Used for making photographic filmemulsion、Developer, used asWood preservative, water treatment and fire retardant additives.[2]
Colorless or white crystalline powder.It is tasteless and odorless.There is slight moisture absorption in the air.452 ℃ sublimation.Soluble in water, alcohol, slightly soluble in ether.
Synthetic method: 1. Add water and liquid ammoniaReactorAdd bromine slowly under stirring, control the temperature at 60~80 ℃, and pass ammonia to pH 7~8 as the reaction end point.The reaction solution obtained is decolorized, filtered, evaporated, crystallized and dried by activated carbon to obtain finished ammonium bromide.
