Cerium(III) oxide
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For the other compound also known as cerium oxide, see Cerium(IV) oxide.
Cerium(III) oxide, also known as cerium oxide, cerium trioxide, cerium sesquioxide, cerous oxide or dicerium trioxide, is an oxide of the rare-earth metal cerium. It has chemical formula Ce2O3 and is gold-yellow in color.
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
Cerium(III) oxide | |
Other names
Cerium sesquioxide | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.014.289 |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
Ce2O3 | |
Molar mass | 328.229 g·mol−1 |
Appearance | yellow-green dust[citation needed] |
Density | 6.2 g/cm3 |
Melting point | 2,177 °C (3,951 °F; 2,450 K) |
Boiling point | 3,730 °C (6,750 °F; 4,000 K) |
insoluble | |
Solubility in sulfuric acid | soluble |
Solubility in hydrochloric acid | insoluble |
Structure | |
Hexagonal, hP5 | |
P3m1, No. 164 | |
Hazards | |
GHS labelling: | |
Related compounds | |
Other anions |
Cerium(III) chloride |
Other cations |
Lanthanum(III) oxide, Praseodymium(III) oxide |
Related compounds |
Cerium(IV) oxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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