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% |