Characteristic:
Appearance and properties:Fine white or nearly white powder or granules. Deliquescent. Exposed in air or seen the light iodine precipitaed it becomes brown.
Relative density(water=1):4.74 at 25℃(lit.)
Melting point(℃):445(lit.)
Boiling point(℃):624
Solubility:Soluble in alcohol and ether, slightly soluble in glycerin.