1) White Dry Powder & Granules 2) Purity:99.7% & 99.5% 3) Use: Rubber,Food , Chemicals... 4) Packing: 25kg 5) ... , density 5.606, melting point 1975 °, is an amphoteric oxide, soluble in acid and alkali, insoluble in water or ethanol. High ... needs 4, pay attention to moisture during storageand transportItemsContentPurity (zno)99.70 min99.50 minMetal (Zn)00PbO %≤0.0370.05MnO %≤0 ...