Molecular formula: ZnO

Molecular weight: 81.37

Appearance: White powder

Properties: Relative density 5 606, melting point 1975 ℃, sublimating at 1800 ℃, stable at room temperature, insoluble in water and alcohol, and soluble in acid and alkali ammonium salt solutions, it is an amphoteric oxide. When absorbing carbon dioxide and water in the air, it produces white zinc carbonate, so it should be stored in a sealed container. Not reduced by hydrogen gas, it turns into lemon yellow when heated and white again when cooled.

Usage: Used as a vulcanization accelerator for rubber (natural rubber, synthetic rubber, chloroprene rubber, etc.), a desulfurization catalyst, a light stabilizer for plastics (such as polyolefins, polyvinyl chloride, etc.), and also in the coatings and ceramics sectors.