CAS:7789-41-5 MW:199.89 properties:colorless,crystalline or crystal block,odourless, taste salty, and bitter.Relative density of 3.353 Easily soluble in water, neutral aqueous solution use:Used in oil industry, also used in the manufacture of ammonium bromide and light-sensitive paper, fire extinguishing agent, refrigerant, etc. used as a central nervous system depressants in Medicine, for inhibition, sedation, for the treatment of neurasthenia, epilepsy, etc.