... , is an outcome of zinc by oxidation. Insoluble in water, soluble in acid and alkali. Zinc oxide as chemical additives is usually ... light yellow powder, density 5.606, melting point 1975 °, is an amphoteric oxide, soluble in acid and alkali, insoluble in water or ethanol. ... packaging 2, the standard package weight: 25kg or 1000kg3, can also be packaged according to user needs 99.5% 99.7%Zinc Oxide