| ITEM | STANDARD |
| Appearance | White Crystalline Powder |
| Identification | Positive |
| Whiteness | > 80 |
| Assay | > 99% |
| Loss on Drying | =< 0.5% |
| Acidity and Alkalinity | =< 1% |
| Solubility | Freely soluble in water, practically insoluble in ethanol |
| Heavy Metals (as Pb) | =< 1mg/ kg |
| Arsenic | =< 0.5mg/ kg |
| Ammonium (as NH﹢4) | =< 100mg/ kg |
| Sodium Chloride | =< 1.45% |
| Water Insoluble Impurities | =< 0.05% |
| Water Insoluble Residue | =<0.05% |
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