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Direct method zinc oxide 99%
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Product Details
Direct Zinc oxide, white ∑ hexagonal crystalline or powder.π≠¥≈ Odorless, non-toxic, and fine in ₹≈≥texture. Relative densΩity 5.606. Refractive₹ index 2.008-2.029. Melting point 1975℃®↓↔.
Direct Zinc oxide has a s§↕π↓trong fluxing effect in glazes, whi€↔ch can reduce the expansion c←✘✘oefficient of the glaze, improve¶∏₹ the thermal stability of the product, and i≤✔™σncrease the gloss and whiε₽teness of the glaze, enhancing its elasti↔<$δcity. It can also increase γ× &the brilliance of the glaze color while expandin≥×←g the melting range. However, it i ✘s not suitable for use in black glazes containin↔g chromium.
Product Inspection Report
Appearance of Zinc Oxide | Powder | ||||||
Item | Index | ||||||
Direct Method | Calcination Method | Indirect Method | |||||
1 | Zinc Oxide | ZNO | %Min | 99 | 99 | 99.6 | 99.7 |
2 | Lead Oxide | PbO | %Max | 0.02 | 0.05 | 0.03 | 0.02 |
3 | Cadmium Oxide | Cdo | %Max | 0.01 | 0.005 | 0.005 | 0.0005 |
4 | Ferric Oxide | Fe2O3 | %Max | 0.03 | 0.06 | 0.04 | 0.0002 |
5 | Insoluble in Hydroch>≤<loric Acid | ----- | %Max | 0.01 | 0.02 | 0.01 | 0.0003 |
6 | Loss on Ignition | ----- | %Max | 0.8 | 0.1 | 0.06 | 0.04 |
7 | Soluble in Water | ----- | %Max | 0.55 | 0.45 | 0.40 | 0.02 |
8 | Screen Residue (325 mesh mixed s™±$creening) | ----- | %Max | 0.30 | 0.50 | 0.30 | 0.02 |
9 | Moisture | ----- | %Max | 0.20 | 0.0066 | 0.10 | 0.001 |
10 | Specific Gravity | ----- | %Max | 1.1 | 2.9 | 2.9 | 0.1 |
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