| Sr. No. |
TEST |
SPECIFICATION |
REFERENCE |
| 1. |
Description |
White or almost white, hygroscopic, crystalline powder |
USP |
| 2. |
Solubility |
Soluble in water; practically insoluble in anhydrous ethanol |
USP |
| 3. |
Identification |
(A) zinc ion test (B) Gluconate ion test |
USP |
| 4. |
Impurities :- |
(1) CHLORIDE – NMT 500ppm (2) SULFATE – NMT 500ppm (3) ARSENIC – NMT 3 ppm (4) LEAD – NMT 10 ppm (5) CADMIUM – NMT 5 ppm (6) REDUCING SUBSTANCES – NMT 1.0% |
USP |
| 5. |
Water determination |
NMT 11.6% |
USP |
| 6. |
pH |
5.5 to 7.5 |
USP |
| 7. |
Assay(On Dry Basis) |
NLT 97.0% & NMT 102.0% |
USP |
