Cerium oxide is an inorganic substance with a chemical formula of CeO2, a light yellow or yellowish brown auxiliary powder. Density 7.13g/cm3, melting point 2397ºC, insoluble in water and alkali, slightly soluble in acid. At a temperature of 2000 °C and a pressure of 15MPa, cerium oxide can be obtained by reducing cerium oxide with hydrogen. When the temperature is free at 2000 °C and the pressure is free at 5MPa, the cerium oxide is yellowish, slightly reddish, and pink. Its performance It is used as polishing material, catalyst, catalyst carrier (auxiliary), ultraviolet absorber, fuel cell electrolyte, automobile exhaust gas absorber, electronic ceramics, etc.
English name: ceric dioxide
English alias: Cerium Dioxide; Ceric oxide; Cerium oxide;
CAS number: 1306-38-3
Molecular formula: CeO2
Molecular weight: 172.11500
Exact mass: 171.89500
PSA: 34.14000
oxidizing agent. Catalysts for organic reactions. Iron and steel analysis as a rare earth metal standard. Redox titration analysis. Decolorized glass. Glass enamel sunscreen. Heat resistant alloy.
It can be used as an additive in the glass industry, as a grinding material for plate glass, and can also be used in cosmetics to play an anti-ultraviolet role. It has been expanded to the grinding of spectacle glass, optical lenses, and picture tubes, and plays the role of decolorization, clarification, and absorption of ultraviolet rays and electron rays of glass.