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Direct method zinc oxide 99.5%ε£π
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Zinc oxide is used in industries such as paint×≤'s, coatings, rubber,"< ceramics, medicine, and " <≠fertilizers, and is oft ↓en used as a catalyst in organic synthesis. α₹Molecular formula: ZnO, molecular₹∞₹ weight: 81.39
Appearance: white fine powder
Zinc oxide specification indicators
| Zinc oxide appearance | Powder | |||||
| Item | Indicator | |||||
| Calcination method | Indirect method | |||||
| 1 | Zinc oxide | ZnO | %Min | 99 | 99.6 | 99.7 |
| 2 | Lead oxide | PbO | %Max | 0.05 | 0.03 | 0.02 |
| 3 | Cadmium oxide | CdO | %Max | 0.005 | 0.005 | 0.0005 |
| 4 | Ferric oxide | Fe2O3 | %Max | 0.06 | 0.04 | 0.0002 |
| 5 | Hydrochloric acid insoluble matt¶&er | ----- | %Max | 0.02 | 0.01 | 0.0003 |
| 6 | Loss on ignition | ----- | %Max | 0.1 | 0.06 | 0.04 |
| 7 | Water-soluble matter | ----- | %Max | 0.45 | 0.40 | 0.02 |
| 8 | Residue on sieve (325 mesh ∏π♥mixed sieve) | ----- | %Max | 0.50 | 0.30 | 0.02 |
| 9 | Moisture | ----- | %Max | 0.0066 | 0.10 | 0.001 |
| 10 | Specific gravity | ----- | %Max | 2.9 | 2.9 | 0.1 |
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