Zinc Sulphate Tablets
DEFINITION
Zinc Sulfate Tablets contain Zinc Sulfate Monohydrate.
The tablets comply with the requirements stated under Tablets and with the following requirements.
Content of zinc sulfate heptahydrate, ZnSO4,7H2O
95.0 to 105.0% of the stated amount.
IDENTIFICATION
A. A quantity of the powdered tablets containing 0.1 g of Zinc Sulfate Monohydrate yields the reaction characteristic of zinc and zinc salts, Appendix VI.
B. A quantity of the powdered tablets containing 45 mg of Zinc Sulfate Monohydrate yields the reactions characteristic of sulfates, Appendix VI.
ASSAY
Weigh and powder 20 tablets. Disperse a quantity of the powdered tablets containing 0.16 g of Zinc Sulfate Monohydrate in 5 mL of dilute acetic acid. Carry out the complexemetric titration of zinc, Appendix VIII D.
Each mL of 0.1M sodium edetate is equivalent to 17.95 mg of ZnSO4,7H2O.
STORAGE
Zinc Sulfate tablets should be protected from light and moisture.
