Ceric Oxide

Name:
Ceric Oxide
Detailed information:

Chemistry name:	cerium dioxide; cerium oxide; ceria
M Formula:	CeO2
Properties:
Pale-yellow, heavy powder (white when pure). Commercial product is brown. D 7.65, mp 2600 C. Soluble in sulfuric acid; insoluble in water and dilute acid. Requires reducing agent with acid to dissolve the anhydrous oxide. Noncombustible.
Derivation:
By decomposition of cerium oxalate by heat. Hardness depends on firing temperature.
Grade:
Technical, high purity (99.8%).
Use:
Ceramics; abrasive for glass polishing; opacifier in photochromic glasses; retarder of discoloration in glass, especially radiation shielding and color TV tubes; catalyst; enamels and ceramic coatings; phosphors; cathodes; capacitors; semiconductors; refractory oxides; diluent in nuclear fuels; heat stabilizer (alumina catalyst).