It is characterized as white cub crystal or powder. It's transparent, poisonless, smelless, easily diliquisences and dissolved in water, ethanol, ether, slightly dissolved in pyridine and insolvable in such organic solvent as formaldehyde, acetone, etc.

Used in inorganic industry, used as the removing agent for hydrogen chloride and expanding agent for organic fibers; used electrolyte in high energy miniature battery; and also used in photograph industry and chemical industry.