Show yellow small white crystalline powder, heating, melting show dark yellow, very difficult to soluble in water, the melting point is 733 ℃, boiling point is 1260 ℃.Supply the purity 99.999%, including aluminum, calcium, copper, iron, magnesium, nickel, lead and other impurities total content is less than 10 PPM.Mainly used for the preparation of tellurium dioxide single crystal, infrared devices, acousto-optic devices, etc.Packaging for polyethylene bottle vacuum encapsulation.