Zinc oxide can be carbon, carbon monoxide and hydrogen at high temperature is reduced
White or yellowish fine spherical powder, the proportion of 5.5-6.5 g/cm3, specific surface area 8 m2 / g, particle size 0.15-0.7μm, the refractive index of 1.95-2.05, at 20 , the specific heat of 0.0915 Cards / g , melting point 1973 , zinc oxide at 1000 when the phenomenon of evaporation.