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Scandium oxide
Chemical compound / From Wikipedia, the free encyclopedia
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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).
Quick Facts Names, Identifiers ...
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Names | |
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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[1] | |
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).
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