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Product name
Zinc sulfate, heptahydrate
Specification
Food grade
Molecular formula
ZnSO4·7H2O
CAS
7446-20-0
H.S. CODE
2833293000
Molecular weight
278.05
Appearance
White crystal powder
Package
25KG Woven bags or fiber drums
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Property：
Odorless crystaline powder or granules. zinc sulfate is a colorless crystalline solid. Zinc sulfate is also obtained as a hexahydrate, ZnSO4.6H2O, and as a heptahydrate ZnSO4.7H2O. All forms are soluble in water. All are noncombustible. It is used in the production of rayon, as a feed supplement, and as a fertilizer ingredient.
Application：
Used in the manufacture of lithopone, and used as mordant, astringent, wood preservative, etc.
Test standard：GB 25579-2010
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Test items |
Specification |
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Food grade |
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Appearance |
White crystal powder |
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Assay |
99.0~108.7% |
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Acidity |
Conform |
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Alkaline and alkaline metals |
≤0.5% |
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Cadmium |
≤2 mg/kg |
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Lead |
≤4mg/kg |
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Mercury |
≤1 mg/kg |
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Selenium |
≤30 mg/kg |
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Arsenic |
≤3 mg/kg |
Storage：
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
