Zinc Carbonate,Basic (transparent rubber grade)
Molecular formula: ZnCO3.2Zn(OH)2.H2O
Molecular weight: 342.23
Properties: White amorphous powder, smell-less, tasteless.
Basic Zinc Carbonate in this grade can be widely used to produce transparent rubber for its excellent transparency.
Index:
|
Items |
Index (%) | ||
|
Ⅰ |
Ⅱ |
Ⅲ | |
|
Zn content ≧ |
57.5 |
57 |
56.5 |
|
Loss on ignition |
25.0—28.0 |
25.0--30.0 |
25.0--32.0 |
|
Heavy metal content (Pb) ≦ |
0.0005 |
0.001 |
0.005 |
|
Moisture ≦ |
2.5 |
3.5 |
5 |
|
SO42- ≦ |
0.4 |
0.8 |
-- |
|
Sieve Residue (75microns mesh): ≧ |
95 |
94 |
93 |
|
Cd ≦ |
0.0004 |
0.001 |
0.005 |