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Direct method zinc oxide 99.5%
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Product Details
Zinc oxide is used in industries such as paints, coatings, rubber, ceramics, medicine, and fertilizers, and is often used as a catalyst in organic synthesis. Molecular formula: ZnO, molecular weight: 81.39
Appearance: white fine powder
Zinc oxide specification indicators
Zinc oxide appearance | Powder | ||||||||||
Item | Indicator | ||||||||||
Direct method | Calcination method | ||||||||||
1 | Zinc oxide | ZnO | %Min | 90 | 95 | 98 | 99 | 95 | 98 | 99 | 99.6 |
2 | Lead oxide | PbO | %Max | 6 | 0.4 | 0.06 | 0.02 | 0.6 | 0.08 | 0.05 | 0.03 |
3 | Cadmium oxide | CdO | %Max | 0.01 | 0.01 | 0.01 | 0.01 | 0.005 | 0.005 | 0.005 | 0.005 |
4 | Ferric oxide | Fe2O3 | %Max | 0.1 | 0.05 | 0.05 | 0.03 | 0.3 | 0.08 | 0.06 | 0.04 |
5 | Insoluble in hydrochloric acid | ----- | %Max | 0.6 | 0.06 | 0.05 | 0.01 | 0.3 | 0.04 | 0.02 | 0.01 |
6 | Loss on ignition | ----- | %Max | 0.1 | 4.00 | 2.00 | 0.8 | 0.1 | 0.1 | 0.1 | 0.06 |
7 | Water-soluble | ----- | %Max | 0.5 | 0.60 | 0.60 | 0.55 | 0.60 | 0.55 | 0.45 | 0.40 |
8 | Residue on sieve (325 mesh mixed screening) | ----- | %Max | 0.3 | 0.30 | 0.30 | 0.30 | 0.60 | 0.5 | 0.50 | 0.30 |
9 | Moisture | ----- | %Max | 0.11 | 0.20 | 0.14 | 0.20 | 0.012 | 0.02 | 0.0066 | 0.10 |
10 | Specific gravity | ----- | %Max | 1.1 | 1.1 | 1.1 | 1.1 | 2.8 | 2.9 | 2.9 | 2.9 |
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