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| ITEM | STANDARD |
| Appearance | White to Light Brownish Powder |
| Assay(%) | =>98% |
| Loss on drying(%) | =<0.5% |
| Residue on ignition(%) | =<1.5% |
| Heavy Metals(as Pb) | =<0.0005% |
| pH | 0.8-1.2 |