Zinc Oxide
Properties: White powder; odorless; bitter taste; absorbs carbon dioxide from the air; has greatest ultraviolet absorption of all commercial pigments sp.gr.5.47; m.p.1975°C; soluble in acids and alkalis; insoluble in water and alcohol. Noncombustible; Nontoxic as powder.
Molecular Formula: ZnO
Molecule Weight: 81.37
CAS NO.: 1314-13-2
Appearance: White Powder
Specification:
Pjarmaceutical Zinc Oxide Glass Envelope Zinc Oxide
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Item
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Index
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Item
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Index
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Assay(ZnO)
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≥99%
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Zinc Oxide(on dry sample)
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≥99.7%
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Alkalinity（0.1 mol/LHCl）
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≤0.10 ml
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Lead（as Pb）
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≤0.005%
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Loss on ignition
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≤1.0%
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Cadmium（Cd）
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≤0.0015%
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Carbonate and matter insoluble in acid
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Qualified
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Iron（as Fe）
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≤0.001%
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Iron
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≤0.005%
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Sulfur compound（SO4）
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≤0.003%
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Lead
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Qualified
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Matter soluble
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≤0.10%
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Arsenic
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≤0.0002%
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Moisture
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≤0.3%
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|
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Residue on 45um sieve
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≤0.1
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Zinc Oxide Standard for Glass Arrester
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Item
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Index
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Zinc Oxide(on dry sample)
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≥99.7%
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Potassium Oxide（K）
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≤0.0010%
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Sodium Oxide（Na）
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≤0.0010%
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Iron Oxide（Fe）
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≤0.0020%
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Cadmium Oxide（Cd）
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≤0.0050%
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Lead Oxide（Pb）
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≤0.0035%
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Copper Oxide（Cu）
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≤0.0002%
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Metal Zinc（Zn）
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No
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Moisture
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≤0.3%
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Matter insoluble in HCl
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≤0.006%
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Loss on ignition
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≤0.2%
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PH Value
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7.0-7.8
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Average particle size（D-a）m
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0.5
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Residue on 45um sieve
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≤0.10%
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Uses: Accelerator activator, pigment, and reinforcing agent in rubber; ointment; pigment and mold growth inhibitor in paints; ceramics; floor tile; glass; zinc salts (zinc stearate etc.) feed additive; semiconductor in electronic devices; electronic ceramics, raw material to produce zinc phosphate as steel coating.
Standard Packing: 25kg pp bag
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