... in water, soluble in acid and alkali. Zinc oxide as chemical additives is usually and widely used in plastic, silicate products, ... , batteries, flame retardants and other relevant fields. Our Zinc Oxide is processed by indirect Process, Powder and Granules.in accordance with ... yellow powder, density 5.606, melting point 1975 °, is an amphoteric oxide, soluble in acid and alkali, insoluble in water or ...