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- Molecular formula: CeO2
- Molar mass: 172.115
- CAS Registry Number: Not available
- Appearance: Not available
- Melting point: 2600
- Boiling point: Not available
- Solubility: Water, 1.07e+005 mg/L (21 deg C)
- Safety sheet: Not available
- Spectra: Check on SDBS. Add Spectra (Help).
Cerium(IV) oxide, also known as ceric oxide, ceria, cerium oxide or cerium dioxide, is an oxide of the rare earth metal cerium. It is a pale yellow-white powder with the chemical formula CeO2.
Cerium(IV) oxide is formed by the calcination of cerium oxalate or cerium hydroxide.
Powdered ceria is slightly hygroscopic and will also absorb a small amount of carbon dioxide from the atmosphere.
Cerium also forms cerium(III) oxide, Ce2O3, which is more stable at standard conditions for temperature and pressure than CeO2.
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Dioxocerium (IUPAC Name); Dioxo-cerium
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