| ITEM | INDEX | RESULT |
| Trichloride method | ||
| Appearance | White crystalline soild | White crystalline solid |
| Asay (by lodometry )% | 98.5 min | 98.81 |
| Ion content % | 0.002 max | 0.001 |
| Phosphate acid % | 0.3 max | 0.10 |
| Chloride % | 0.01 max | 0.01 |
| Sulfates as Na2SO4 | 0.008 max | 0.006 |
| Arsenic content % | 0.004 max | 0.0004 |
| Heavy metals as pb% | 0.001 max | 0.001 |
| Cd % | 0.0001 max | 0.0001 |
| Cr % | 0.0001 max | 0.0001 |
| Hg % | 0.0001 max | 0.0001 |