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Calcium Carbonate
| ITEMS | LIMIT |
| Description | Fine, white, microcrystalline powder |
| Odorless | |
| Identification | A: Meet the requirement of the test for Carbonate |
| B: Meet the requirement of the test for | |
| Calcium | |
| Loss on drying | ≤2.0% |
| Acid Insoluble substances | ≤0.2% |
| Limit of Fluoride | ≤0.005% |
| Arsenic | ≤0.0003% |
| Barium | Meet the requirement of the test for Barium |
| Lead | ≤0.0003% |
| Limit of Magnesium & Alkali salts | ≤1.0% |
| Assay | 98.0 ~ 100.5% |
| Iron | ≤0.1% |
| Mercury | ≤0.00005% |
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