1. Physical Properties
Zinc carbonate, basic white fine amorphous powder. Odorless, tasteless. The relative density of 4.42-4.45. Do not dissolve in water and alcohol. Slightly soluble in ammonia. Can be soluble in dilute acid and sodium hydroxide. With 30% hydrogen peroxide effect, release carbon dioxide, the formation of peroxides.
2.Uses
Zinc carbonate, basic used as a light astringent and latex products raw materials. For the preparation of calamine lotion, used as a skin protective agent, can also be used in the production of artificial silk and catalytic desulfurization agent
also , it is widely used in Oil and Drilling fields
3.Specification
Item | Specifications | ||
Excellent-class | First-class | Conforming class | |
Main content (in zinc)(dry basis), %≥ | 57.5 | 57 | 56.5 |
Loss on ignition% | 25.0-28.0 | 25.0-30.0 | 25.0-32.0 |
Heavy metal content (in Pb), % ≤ | 0.04 | 0.05 | 0.05 |
Water content, % ≤ | 2.5 | 3.5 | 5 |
Sulphate content, (in SO4) % ≤ | 0.60 | 0.80 | -- |
Fineness( 75μm sieve), % ≥ | 95.0 | 94.0 | 93.0 |
Cadmium content(Cd) , % ≤ | 0.10 | -- | -- |