Physical and chemical properties: the molecular weight 172.13, weak yellow or yellow-brown powder, density of 7.13 g/cm3, melting point 2397 ℃. Insoluble in water and alkali, slightly soluble in acid. In 2000 ℃ temperature and 15 Mpa pressure, can use hydrogen reduction cerium oxide get trioxide ce. In 2000 ℃ temperature between free, free in 5 Mpa pressure pressure, cerium oxide is light yellow with red and pink.

Areas of application: ce application field is very wide, almost all of the rare earth application areas contain ce. Such as polishing powder, hydrogen storage material, thermoelectric materials and cerium tungsten electrodeceramic capacitor, piezoelectric ceramic, ce silicon carbide abrasive, fuel cell materials, gasoline catalyst, some permanent magnetic materials and all kinds of alloy steel and non-ferrous metals.