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Direct method zinc oxide 99%
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Direct Zinc oxide, white hexagonal crystalline o≥☆>r powder. Odorless, non↕€←♠-toxic, and fine in texture. Relat>¶ive density 5.606. Refractive index 2.008-2.±¥✘>029. Melting point 1975℃.
Direct Zinc oxide has a strong fluxi≠♠↓♠ng effect in glazes, w♥ ≠ hich can reduce the expansio→•$n coefficient of the < glaze, improve the thermal stab'ility of the product, and increas♦§✘€e the gloss and whiteness o₽φΩf the glaze, enhancing its elasti×πcity. It can also increase the brillia↑α<nce of the glaze color while expanding the melt∞ δ®ing range. However, it is not λ≠¶×suitable for use in black glazes ¶© containing chromium.
Product Inspection Rep λ✔εort
Appearance of Zinc Oxide | Powder | |||
Item | Index | |||
Indirect Method | ||||
1 | Zinc Oxide | ZnO | %Min | 99.7 |
2 | Lead Oxide | PbO | %Max | 0.005 |
3 | Cadmium Oxide | CdO | %Max | 0.0005 |
4 | Copper Oxide | CuO | %Max | 0.0002 |
5 | Manganese | Mn | %Max | 0.0003 |
6 | Insoluble in Hydrochloric Acid | --- | %Max | 0.04 |
7 | Loss on Ignition | --- | %Max | 0.02 |
8 | Soluble in Water | --- | %Max | 0.02 |
9 | Residue on Sieve (325 mesh we☆φt sieve) | --- | %Max | 0.001 |
10 | Moisture | --- | %Max | 0.1 |
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