[Molecular formula] : ZnCO3 . 2Zn(OH)2 . H2O
[Molecular weight ] : 324.15
[Properties] : white fine formless powder, without odor & taste. Sg 4.42-4.45
[Uses] : used as material of latex product, or used in skin protection agent, rayon, desulfurizer
agent of petroleum, the material of catalyst . It also can be used in rubber , paint, drug &
other chemicals.
[Quality standard] : HG/T2523-93
[Packing] : PE film bag lined plastic woven bag. Net wt 25kg
Item |
Value |
Top-grade |
First grade |
Qualified product |
Assay(as Zn)(as Dry), % ≥ |
57.5 |
57.0 |
56.5 |
Loss on ignition % |
25.0-28.0 |
25.0-30.0 |
25.0-32.0 |
Heavy metals (as Pb ), % ≤ |
0.04 |
0.05 |
0.05 |
Moisture, % ≤ |
2.5 |
3.5 |
5.0 |
Sulfate (as SO4 ), % ≤ |
0.60 |
0.80 |
|
Fineness (pass 75um sieve), % ≥ |
95.0 |
94.0 |
93.0 |
Cd, % ≤ |
0.10 |
|
|
|
