| M | 105.99 |
|---|---|
| m.p | 851 °C |

| White solid | Complying |
| Assay (T dry) | 99.5-100.5%w/w |
| Loss on heating at 285°C | <= 1.0% |
| Insoluble matter | <= 0.01% |
| Chloride (Cl) | <= 0.001% |
| Heavy metals (as Pb) | <= 0.0005% |
| Iron (Fe) | <= 0.0005% |
| Calcium (Ca) | <= 0.03% |
| Magnesium (Mg) | <= 0.005% |
| Potassium (K) | <= 0.005% |
| Sulfur compounds (as SO4) | <= 0.003% |