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| Items | Specifications | Results of test |
| Appearance | White powder | White powder |
| Assay % | ≥99.6 % | 99.7% |
| Chloride % | ≤0.01% | 0.003% |
| Sulphate % | ≤0.2% | 0.18 % |
| Heavy metal % | ≤0.02% | 0.006% |
| Iron % | ≤0.01% | 0.007 % |
| Residue on ignition | ≤0.2% | 0.1% |
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