Scandium oxide
| Names | |
|---|---|
| IUPAC name
Scandium(III) oxide | |
| Other names
Scandia, scandium sesquioxide | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.031.844 |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| Sc2O3 | |
| Molar mass | 137.910 g/mol |
| Appearance | White powder |
| Density | 3.86 g/cm3 |
| Melting point | 2,485 °C (4,505 °F; 2,758 K) |
| insoluble in water | |
| Solubility | soluble in hot acids (reacts) |
| Structure | |
| Bixbyite | |
| Ia3 (No. 206) | |
a = 985 pm | |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Related compounds | |
Other anions |
Scandium(III) sulfide |
Other cations |
Yttrium(III) oxide Lutetium(III) oxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Scandium(III) oxide or scandia is a inorganic compound with formula Sc2O3. It is one of several oxides of rare earth elements with a high melting point. It is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material).