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 |
-- |
-- |