Zinc Carbonate
|
Items |
Index |
||
Best quality product |
First quality product |
Qualified product |
|
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(SO4 ) % ≤ |
0.60 |
0.80 |
|
Fineness through the 75um mesh % ≥ |
95.0 |
94.0 |
93.0 |
Cadmium(Cd) % ≤ |
0.10 |
-- |
0.003 |
