Chemical Name: Zinc sulfate Molecular Formula : ZnSO4.H2O, ZnSO4.7H2O Molecular Weight: 179.49(Monohydrate), 287.58(Heptahydrate) CAS: 7446-19-7 H2O 7446-20-0 (7H2O) Character: It is colorless or white crystalline powder, odorlessness. Efflorescence in air. Acid hydrometer is 1.957(25/4â??) to litmus. Melting point is 100â??. Itâ??s soluble in water and glycerol, insoluble in ethanol and light toxicity, lose crystal water in 280â??. Usage: It is used as food additives, animal feed, printing and dyeing, timber preservative.Used as analytical reagent. Packing: It is packed with polythene bag as the inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg. Storage and Transport: It should be stored in a dry and ventilative warehouse; kept away form water and moisture during transport; unloaded with care, so as to avoid damage to bags. Furthermore, it should be stored separately from poisonous substances.