| Item | Description |
| Appearance | white granules or crystalline powder |
| Assay% | 98.0-103.3 |
| Drying Loss% | ≤18.5 |
| Chloride% | ≤0.005 |
| Sulphate% | ≤0.02 |
| Heavy Metal% | ≤0.001 |
| Arsenic % | ≤0.0003 |
Packing: 25kg paper-cloth composite bag lined with plastic bag.
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