direct method zinc oxide

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direct method zinc oxide
Posting date : Jul 24, 2007
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28-
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Molecular formula:ZnO Molecular weight:81.39 Zinc Oxide's Physical & chemical property: White powder,innocuous,odorless,density 5.606,meting point 1975℃,amphoteric oxide, insoluble in water or ethanol ,soluble in acid & alkali solution and ammonium chloride solution, become yellow when heated then come to white when cooled. Specification: Direct method zinc oxide (90-99.5%) Zinc oxide%(by dry products) ≥:99.5 Lead oxide (PbO)% ≤:0.12 Cupric Oxide(CuO)% ≤:0.006 Cadmium Oxide(CdO)% ≤:0.02 Manganese(Mn)% ≤:0.0002 HCL insolubles% ≤:0.03 Loss on ignition %≤:0.4 Water solubles %≤:0.4 Sieve residue (320meshes) %≤:0.28

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