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| Item | Unit | Index |
| Size 200 mesh | % | ≥90 |
| Iodine value | mg/g | ≥900 |
| Methylene blue | ml | ≥9 |
| Total Iron | % | ≥0.15 |
| Dry dectement | % | ≤10 |
| Lgnition residual | % | ≤0.5 |
| Oxide | % | ≤0.20 |
| PH value | 5-8 |
