Apperance: colorless orthorhombic crystals of prismatic crystals.

Nature: colorless or white crystalline powder. Relative density 1. 975; Melting point 100 ℃. Weathering in dry air. Soluble in water and amines, slightly soluble in ethanol and glycerol, insoluble in liquid ammonia and ketone. Heating to 30 deg C to lose 1 molecule of crystal water, 100 deg C to lose 6 molecules of crystal water, 280 deg C to lose 7 molecules of crystal water, 767 deg C decomposition into ZnO and SO3.

Use: Used as mordant, wood preservative, paper industry bleaching agent, also used in medicine, artificial fiber, electrolysis, electroplating, pesticide and the production of zinc salt.

Safety: non-combustible. Irritant to skin and mucous membrane. Anhydrous and concentrated solution can cause skin ulcers. Inhalation of dust can cause respiratory, digestive and circulatory system dysfunction. Staff should be protected. This product should be stored in a cool and dry place to prevent rain, moisture, prevent sun, heat. They shall not be co-stored and transported with acid, alkali and colored substances.