Zinc oxide is white powder, odorless, non-toxic and fine, relative density is 5.606, refractive index is 2.0041-2.029 ,fnp(43.3) is 1720°C, Boiling point is 1800 °C, soluble in acid, NaOH , NH4CL , insoluble in water, ethanol or ammonia, it can absorb the CO2 and water in the air and generate yellow ZnCO3,it can absorb ultraviolet rays. Zinc oxide can be used as a white pigment, used in printing and dyeing, paper making and matches. In the rubber industry is used as natural rubber, synthetic rubber and latex of vulcanizing agent and reinforcing agent and colouring agent. Also used in pigment of zinc chrome yellow, zinc acetate and zinc carbonate, zinc chloride, etc. Also used for electron laser material, phosphor, feed additives, catalysts, etc. Used for making ointment, zinc coating, adhesive plaster, etc.