... an outcome of zinc by oxidation. Insoluble in water, soluble in acid and alkali. Zinc oxide as chemical additives is usually ... Zinc oxide has large bandgap and exciton binding energy, high transparency and excellent performance of in normal temp., so it also ... melting point 1975 °, is an amphoteric oxide, soluble in acid and alkali, insoluble in water or ethanol. High temperature, yellow, white, cold ...