Literature
Product name: Zinc carbonate
Molecular ZnCO3•2Zn(OH)2•H2O
Uses: Used as materials for light astringent and latex products. Used in preparing calamine lotion. Used as skin protectant. Also used in producing rayon and catalytic desulfurating agent.
Quality index:
|
Index name |
Index |
|
Top quality |
First quality |
Qualified product |
|
Appearance |
White powder |
|
Main content (based on Zn, dry basis) % |
≥ 57.5 |
≥ 57.0 |
≥ 56.5 |
|
Loss on ignition % |
25.0-28.0 |
25.0-30.0 |
25.0-32.0 |
|
Heavy metal (based on Pb) % |
≤ 0.04 |
≤ 0.05 |
≤ 0.05 |
|
Water content % |
≤ 2.5 |
≤ 3.5 |
≤ 5.0 |
|
Sulphate (based on SO42-) % |
≤ 0.60 |
≤ 0.80 |
- |
|
Fineness (pass 75 μ m sieve) % |
≥ 95.0 |
≥ 94.0 |
≥ 93.0 |
|
Cadmium (Cd) % |
≤ 0.10 |
- |
- | |
