ZINC CARBONATE Basic
ZINC CARBONATE Basic
| Article No. | 556608 |
| Grade | Extra Pure |
| Purity | – |
| CAS No. | 5263-02-5 |
| Molecular Formula | [ZnCO3]2 [Zn(OH)2]3 |
| Molecular Weight | 549.02 |
| H.S. Code | 2836.9990 |
| Shelf Life | 60 Months |
Physical properties
| Physical state at 20 °C | Solid |
| Colour | White powder |
| Odour | Odorless |
| pH value | 9.5 at 50 g/l at 20 °C |
| Melting point/ Freezing point [°C] | 300 °C |
| Decomposition point [°C] | 300 °C |
| Density [g/cm3] | 3.5 |
| Solubility in water [% weight] | Insoluble in water |
Specifications
| Appearance | White powder |
| Assay (as Zn; complexometric) | Min 47% |
| Chloride (Cl) | Max 0.05% |
| Sulphate (SO4) | Max 0.5% |
| Arsenic (As) | Max 0.0005% |
| Lead (Pb) | Max 0.002% |
| Calcium (Ca) | Max 0.5% |
| Iron (Fe) | Max 0.02% |
| Residue on ignition | 70 – 74% |
| Packings | 500 gm |
