Purity: >99% Appearance: White or yellow to tan Solubility: Insoluble in water and alkali, slightly soluble in acid Stability: Stable under normal temperatures and pressures, slightly hygroscopic Molecular Weight: 172.12  
Name: Cerium(IV) oxide CAS No. 1306-38-3 EINECS No. 215-150-4 MF CeO 2 Molar mass 172.115 g/mol Appearance white or pale yellow solid, slightly hygroscopic Density 7.215 g/cm 3 Melting point 2400 °C Boiling point 3500 °C Solubility insoluble in water, soluble in acid and alcohol Other names Ceric oxide,Ceria,Cerium dioxide  
Cerium(IV) oxide is used in ceramics, to sensitize photosensitive glass, as a catalyst and as a catalyst support, to polish glass and stones. It is also used in the walls of self-cleaning ovens as a hydrocarbon catalyst during the high-temperature cleaning process. It is also a prospective replacement of zinc oxide and titanium dioxide in sunscreens, as it has lower photocatalytic activity. Cerium oxide has found use in infrared filters, as an oxidizing species in catalytic converters and as a replacement for thorium dioxide in incandescent mantles.