... 3) ISO9001,SGS 99.5% 99.7%Zinc Oxide Zinc oxide (ZnO): commonly known as zinc white, is ... water, soluble in acid and alkali. Zinc oxide as chemical additives is usually and widely used ... flame retardants and other relevant fields. Our Zinc Oxide is processed by indirect Process, Powder and Granules.in ... 5.606, melting point 1975 °, is an amphoteric oxide, soluble in acid and alkali, insoluble in water ...