Zinc Sulphate Heptahydrate 21% (Agri grade)

Zinc Sulphate Heptahydrate 21% (Agri grade) Zinc sulfate, chemical compound ZnSO4, a very water soluble, transparent, colorless, crystalline compound. It is commonly used as the heptahydrate, ZnSO47H2O, and is commonly called white vitriol; and can be prepared by reacting zinc with sulfuric acid. It is used to supply zinc in animal feeds, fertilizers, and agricultural sprays; in making lithopone; in coagulation baths for rayon; in electrolyte for zinc plating; as a mordant in dyeing; as a preservative for skins and leather; and in medicine as an astringent and emitic.


1 Appearance White crystal
2 ZnSO47H2O 99% Max
3 Zn Content 21% Min
4 Cu Content 0.1%
5 Pb Content 0.003%
6 Cd Content 0.0025%
7 Water insolubles 0.05% Max
8 Sulphur as S 10.0%
9 PH not less than 4.0