NILE 
CHEMICALS
CALCIUM CARBONATE EXTRA PURE
| SPECIFICATION | |
| CaCO3 M.W. 100.09 | |
| Assay ( chelatometric ) | 98.5-100.5% | 
| Maximum Limits of impurities : | |
| Substances insoluble in acetic acid | 0.2% | 
| Substances insoluble in HCI | 0.2% | 
| Chloride ( CI ) | 0.025% | 
| Sulphate ( SO4 ) | 0.25% | 
| Fluoride ( F ) | 0.005% | 
| Heavy Metals ( as Pb ) | 0.002% | 
| Lead ( Pb ) | 0.001% | 
| Copper ( Cu ) | 0.001% | 
| Zinc ( Zn ) | 0.001% | 
| Iron ( Fe ) | 0.02% | 
| Barium ( Ba ) | passes test | 
| Arsenic ( As ) | 0.0003% | 
| Magnesium alkali metals | 1.0% | 
| Loss on drying ( 200OC, 4 hours ) | 2% | 
PRODUCT LIST                                     
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