1.Chemical formula: ZnCO3·2Zn(OH)2·H2O
2.Molecular weight: 342.23
3.Appearance: Fine white amorphous powder, odorless, tasteless, relative density of 4.22-4.45. Insoluble in water and alcohol, slightly soluble in ammonia, can dissolve in acid and sodium hydroxide
4.Application: As a light astringent and latex products raw materials for the preparation of calamine lotion, as a skin protectant. Can also be used in the production of rayon and catalytic desulfurization agent, it is also used to make transparent rubber curing agent, reinforcing agent.
5.Package:
5.1.25kg/bag.
5.2.Compound plastic woven bag with polythene liner.
6.Specification:
|
Items |
High Class |
First Class |
Qualified |
|
Main content (Zn)%≥ |
57.5 |
57 |
56.5 |
|
Heavy metal (Pb) %≤ |
0.03 |
0.05 |
0.05 |
|
Water %≤ |
2.5 |
3.5 |
5 |
|
Sulfate (So42) %≤ |
0.6 |
0.8 |
- |
|
Loss on ignition %≤ |
25-28 |
25-30 |
25-32 |
|
Fineness (75μm) %≥ |
95 |
94 |
93 |
|
Heavy metal (Cd)%≤ |
0.02 |
0.05 |
- |
