|
Product name |
Zinc sulfate, heptahydrate |
|
Specification |
Pharmaceutical grade (USP,BP,EP,CP) |
|
Molecular formula |
ZnSO4·7H2O |
|
CAS |
7446-20-0 |
|
H.S. CODE |
2833293000 |
|
Molecular weight |
278.05 |
|
Appearance |
Colorless 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：
|
Test items |
Specification |
||
|
BP2015 |
USP35 |
CP2015 |
|
|
Appearance |
Colorless crystal powder |
Colorless crystal powder |
Colorless crystal powder |
|
Assay |
99.0~104.0% |
99.0~108.7% |
99.0~103.0% |
|
Appearance of solution |
Conform |
|
Conform |
|
Acidity |
|
Conform |
Conform |
|
Arsenic |
|
≤0.0014% |
|
|
pH |
4.4~5.6 |
|
|
|
Chloride |
≤0.03% |
|
Conform |
|
Lead |
|
≤0.002% |
≤0.001% |
|
Iron |
≤0.01% |
≤0.0003% |
|
|
Alkaline and alkaline earth metals |
|
≤0.9% |
≤0.5% |
Storage：
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
