... . Zinc oxide as chemical additives is usually and widely used in plastic, silicate products, synthetic rubber, lubricants, paint, medicines, adhesives, food, batteries, ... melting point 1975 °, is an amphoteric oxide, soluble in acid and alkali, insoluble in water or ethanol. High temperature, yellow, white, ... : Rubber/tyre, pharmacy, Glass, cement, Food, electronic, zinc oxide used in ceramic grade