NILE CHEMICALS
NILE CHEMICALS
CALCIUM CARBONATE
| CALCIUM CARBONATE EXTRA PURE | |
| 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% |