|
Product name |
Zinc sulfate, heptahydrate |
|
Specification |
Reagent 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 |
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/T 666-2011
|
Test items |
Specification |
|
|
AR grade |
CP grade |
|
|
Appearance |
White crystal powder |
White crystal powder |
|
Assay |
≥99.5% |
≥99.0% |
|
Appearance of solution |
Conform |
Conform |
|
pH |
4.4-6.0 |
4.4-6.0 |
|
Water insoluble |
≤0.01% |
≤0.02% |
|
Chloride |
≤0.0005% |
≤0.002% |
|
Total nitrogen |
≤0.001% |
≤0.002% |
|
Arsenic |
≤0.00005% |
≤0.0002% |
|
Sodium |
≤0.05% |
≤0.1% |
|
Magnesium |
≤0.005% |
≤0.01% |
|
Potassium |
≤0.01% |
≤0.02% |
|
Calcium |
≤0.005% |
≤0.01% |
|
Manganese |
≤0.0003% |
≤0.001% |
|
Iron |
≤0.0005% |
≤0.002% |
|
Copper |
≤0.001% |
≤0.005% |
|
Cadmium |
≤0.0005% |
≤0.002% |
|
Lead |
≤0.001% |
≤0.01% |
Storage：
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
