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Zinc sulfate heptahydrate
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Introduction
Zinc sulfate (ZnSO4) is a colorless crystalline, water-soluble chemical compound. The hydrated form, ZnSO4·7H2O, the mineral goslarite, was historically known as "white vitriol" and can be prepared by reacting zinc with aqueous sulfuric acid. It may also be prepared by adding solid zinc to a copper(II) sulfate solution.
It is used to supply zinc in animal feeds, fertilizers, and agricultural sprays. ZnSO4·7H2O is used in making lithopone, in coagulation baths for rayon, in electrolytes for zinc plating, as a mordant in dyeing, as a preservative for skins and leather and in medicine as an astringent and emetic.
Specification
Item Standard ResultZnSO4.H2O 98% 98.05%
Zn 34% 35.19%
Pb 0.0015% 0.0008%
As 0.0005% 0.0002%
Cd 0.001% 0.0007%
Zinc sulfate heptahydrate
