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Purity ( counted as CaCO3) | ≥ 98.0 |
Acid Insoluble Matter | ≤ 0.20 |
Heavy Metals | ≤ 0.002 |
Arsenic | ≤ 0.0003 |
Loss on Drying | ≤ 2.0 |
Water absorption | 15-17ml/15g |
Iron | ≤ 0.015 |
Lead | ≤ 0.0003 |
PH (20% suspension) | 9.0-10.0 |
whiteness | ≥94.0 |
Residue (325 mesh) | ≤ 0.3 |
Total Aerobic | ≤100 cfu/g |
calcium carbonate