Product :Zinc Carbonate Basic
CAS NO .5970-47-8
Purity :57.5%
Molecular weight :324.15
Molecular formula :ZnCO3 2Zn(OH)2H2O
It is white or yellowish fine amorphous powder, smell-less, tasteless. The proportion is 4.42-4.45, does not dissolve in water and alcohol, slightly soluble in ammonia, can dissolve in the diluted acid and the sodium hydroxide.
Specification:
Item | Index | ||
Best quality | First quality | Qualified | |
Main content(Zn dry basis) % ≥ | 57.5 | 57.0 | 56.5 |
Ignition loss % | 25.0-28.0 | 25.0-30.0 | 25.0-32.0 |
Heavy metal(Pb) content % ≤ | 0.04 | 0.05 | 0.05 |
Moisture % ≤ | 2.5 | 3.5 | 5.0 |
Sulfate(SO 4 ) % ≤ | 0.60 | 0.80 | |
Fineness through the 75um mesh % ≥ | 95.0 | 94.0 | 93.0 |
Cadmium(Cd) % ≤ | 0.10 | 0.003 |
Application:
Light used canonical signed and latex products raw materials, preparation of calamine, as skin protection agents, can also be used to produce artificial silk, oil, chemical fertilizer industry desulfurization agent, catalyst the main raw material. In rubber products, paints, pharmaceuticals and other chemical products can be widely used.