Properties:
Molecular formula: ZnCO 3 . 2Zn(OH) 2 . H 2 O
Molecular weight : 342.23
White formless powder ,odorless and tasteless, relative density 4.42-4.45
Molecular weight : 342.23
White formless powder ,odorless and tasteless, relative density 4.42-4.45
Uses: Basic Zinc Carbonate is used as skin protector, zinc supplement, astringent, or used in emulsion, artificial silk, petroleum, desulphurizer, catalyst, rubber, paint.
Packing: 25kg/ppbag, 20MT/20GP
Specification
| Item | Pharmaceutical Material | Feedstuff Additive | Desulphurizer | Rubber | Paint |
Technical
rade
|
| Main assay( Zn )(dry) ≥ | 57-58 | 57-58 | 57-58 | 55-57 | 55-57 | 55-56 |
| Loss on ignition | 25.0-28.0 | 25.0-28.0 | 25.0-28.0 | 25.0-32.0 | 25.0-32.0 | 28.0-35.0 |
| Heavy metal ( Pb ) ≤ | 0.001-0.01 | 0.001-0.01 | 0.05-0.1 | 0.1-0.2 | 0.1-0.2 | 0.2-0.4 |
| Moisture ≤ | 1.0-2.0 | 1.0-2.0 | 2.0-4.0 | 2.0-4.0 | 2.0-4.0 | 3.0-5.0 |
| Sulfate ( SO 4 ) ≤ | 0.05-0.60 | 0.05-0.60 | 0.60-1.00 | 0.60-1.00 | 0.60-1.00 | ?? |
| Residue on screen( wet 100um ) ≤ | 1-3 | 1-3 | 3-5 | 3-5 | 3-5 | 5-8 |
| ( Cd ) ≤ | 0.001 | 0.001 |