| Grade |
A |
B |
| Appearance |
White Powder |
| Assay, as ZnO% (min.) |
99.8 |
99.6 |
| Lead as Pb% (max.) |
0.002 |
0.05 |
| Cadmium as Cd% (max.) |
0.0005 |
0.001 |
| Copper as Cu% (max.) |
0.0005 |
0.002 |
| Iron as Fe% (max.) |
0.001 |
0.005 |
| Volatiles% on dry basis (max.) |
0.1 |
0.1 |
| Insoluble% in dil. HCl (max.) |
0.01 |
0.01 |
| Oil Absorption% |
14-16 |
14-16 |
| Specific Gravity |
5.5 |
5.5 |
| Surface Area (BET), m2/gr |
5 |
5 |
| Residue% on BS 325 mesh (max.) |
0.02 |
0.1 |
| These are the
general specifications. However, material as
per the specific requirement of customers can
be offered. |
|
| Appearance |
White to Yellow Powder |
| Assay, as Zn% (min.) |
72.0 |
| Lead as Pb% (max.) |
0.05 |
| Cadmium as Cd% (max.) |
0.003 |
| Copper as Cu% (max.) |
0.05 |
| Iron as Fe% (max.) |
0.5 |
| Manganese as Mn% (max.) |
0.05 |
| Calcium as CaO% (max.) |
3.0 |
| Insoluble% in dil. HCl (max.) |
3.0 |
| Residue% on BS 325 mesh (max.) |
8.0 |
| These are the
general specifications. However, material as
per the specific requirement of customers can
be offered. |
|