Product name : Zinc Oxide
Other names : Zinc white;Calamine
CAS # : 1314-13-2
Items Properties
Molecular formula ZnO
Molar mass 81.408 g/mol
Appearance White solid
Odor odorless
Density 5.606 g/cm3
Melting point 1975 °C (decomposes)
Boiling point 2360 °C
Solubility in water .00016 g/100 mL (30 °C)
Refractive index (nD) 2.0041
Flash point 1436 °C
Characteristics and Application :
Zinc oxide is an inorganic compound with the formula ZnO. It usually appears as a white powder, nearly insoluble in water. The powder is widely used as an additive into numerous materials and products including plastics, ceramics, glass, cement, rubber (e.g. car tyres), lubricants, paints, ointments, adhesives, sealants, pigments, foods (source of Zn nutrient), batteries, ferrites, fire retardants, etc.
Zinc white is used as a pigment in paints and is more opaque than lithopone, but less opaque than titanium dioxide. It is also used in coatings for paper. Chinese white is a special grade of zinc white used in artists' pigments. Because it absorbs both UVA and UVB rays of ultraviolet light, zinc oxide can be used in ointments, creams, and lotions to protect against sunburn and other damage to the skin caused by ultraviolet light (see sunscreen). It is the broadest spectrum UVA and UVB absorber that is approved for use as a sunscreen by the FDA, and is completely photostable. It is also a main ingredient of mineral makeup.
