Yttrium(III) oxide
chemical compound
Yttrium oxide is Y2O3. It is an air-stable, white solid substance. Yttrium oxide is used as a common starting material for both materials science as well as inorganic compounds.
| Names | |
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| IUPAC name
Yttrium(III) oxide.
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| Other names
Yttria,
diyttrium trioxide, yttrium sesquioxide | |
| Identifiers | |
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.013.849 |
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CompTox Dashboard (EPA)
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| Properties | |
| Y2O3 | |
| Molar mass | 225.81 g/mol |
| Appearance | White solid. |
| Density | 5.010 g/cm3, solid |
| Melting point | 2,425 °C (4,397 °F; 2,698 K) |
| Boiling point | 4,300 °C (7,770 °F; 4,570 K) |
| insoluble | |
| Solubility in alcohol acid |
soluble |
| Structure | |
| Cubic (bixbyite), cI80[1] | |
| Ia-3, No. 206 | |
| Octahedral | |
| Thermochemistry | |
| Std enthalpy of formation ΔfH |
-1905.310 kJ/mol |
| Standard molar entropy S |
99.08 J/mol·K |
| Hazards | |
| EU classification | None listed. |
| R-phrases | Not hazardous |
| S-phrases | Template:S24/25 |
| Related compounds | |
| Other cations | Scandium(III) oxide, Lanthanum(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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| Infobox references | |
References change
- ↑ Yong-Nian Xu; Zhong-quan Gu; W. Y. Ching (1997). "Electronic, structural, and optical properties of crystalline yttria". Phys. Rev. B56 (23): 14993–15000. Bibcode:1997PhRvB..5614993X. doi:10.1103/PhysRevB.56.14993.
Other websites change
- Yttrium oxide information at Webelements.
- External MSDS Data Sheet Archived 2006-07-18 at the Wayback Machine.
