Zinc sulfate Heptahydrate
name：Zinc sulfate Heptahydrate
Formula：ZnSO4·7H2O
M.W：287.57
CAS NO.：7446-20-0
Characters：White crystalline powder, relative density 3.31, easy to dissolve in air, soluble in water, slightly soluble in alcohol, insoluble in acetone.When heated to 280 ℃, loss of water of crystallization become anhydride, at 740 ℃ is decomposed into zinc oxide and sulphur trioxide.
Usage：It is used as a mordant, wood preservative and bleaching agent for papermaking industry. It is also used in medicine, artificial fiber, electrolysis, electroplating, pesticide and zinc salt production.
Specification：

Name of index

index

Zinc sulfate

98%

Free acid≤

0.05%

Water insoluble≤

0.02%

Iron FE≤

0.04%

Heavy metal ≤

Pass the text 0.005%