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Direct method zinc o×₹λ&xide 95%
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Product Details
Direct Zinc oxide, white hexagonal crysta£πlline or powder. Odorless, non-toxic, and finγ♦®₹e in texture. Relative de↑π®nsity 5.606. Refractive index 2.008-2.029. M<✔↔elting point 1975℃.
Direct Zinc oxide has↓↕$✔ a strong fluxing effect in glazes, which can ¶♣↓reduce the expansion coefficient of the glaze, im∞λprove the thermal stabil±$<₩ity of the product, and increase the gloss ¶→ and whiteness of the glaze, enhancing its elasti &↕city. It can also increase t≠β®he brilliance of the glaze color whi✔$π le expanding the melting ra↓$φnge. However, it is not suitable for us' ↓>e in black glazes containing $§ ↓chromium.
Product Inspection Report
| Appearance of Zinc Oxide | Powder | ||||||||||
| Item | Index | ||||||||||
| Direct Method | Calcination Method | ||||||||||
| 1 | Zinc Oxide | ZNO | %Min | 90 | 95 | 98 | 99 | 95 | 98 | 99 | 99.6 |
| 2 | Lead Oxide | PBO | %Max | 6 | 0.4 | 0.06 | 0.02 | 0.6 | 0.08 | 0.05 | 0.03 |
| 3 | Cadmium Oxide | Cdo | %Max | 0.01 | 0.01 | 0.01 | 0.01 | 0.005 | 0.005 | 0.005 | 0.005 |
| 4 | Ferric Oxide | Fe2O3 | %Max | 0.1 | 0.05 | 0.05 | 0.03 | 0.3 | 0.08 | 0.06 | 0.04 |
| 5 | Insoluble in Hydrochloric Acid | ----- | %Max | 0.6 | 0.06 | 0.05 | 0.01 | 0.3 | 0.04 | 0.02 | 0.01 |
| 6 | Loss on Ignition | ----- | %Max | 0.1 | 4.00 | 2.00 | 0.8 | 0.1 | 0.1 | 0.1 | 0.06 |
| 7 | Soluble in Water | ----- | %Max | 0.5 | 0.60 | 0.60 | 0.55 | 0.60 | 0.55 | 0.45 | 0.40 |
| 8 | Residue on Sieve (325 mesh mixed$₩÷© 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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