Characteristic:
Appearance and properties:colorless or white crystalline powder
pH value:~5-6
Relative density(water=1):5.45
Melting point(℃):652(lit.)
Boiling point(℃):1085
Concentration:Pure
Saturated vapor pressure:Soluble in nitric acid, ammonia and concentrated
sulfuric acid and water, insoluble in ethanol.