| Names | |
|---|---|
| IUPAC name titanium(III) oxide | |
| Other names titanium sesquioxide | |
| Identifiers | |
3D model (JSmol) | |
| ChEBI | |
| ECHA InfoCard | 100.014.271  |
PubChem CID | |
CompTox Dashboard (EPA) | |
| |
SMILES
| |
| Properties | |
Chemical formula | Ti2O3 |
| Molar mass | 143.76 g/mol |
| Appearance | violet black powder |
| Odor | odorless |
| Density | 4.49 g/cm3 |
| Melting point | 2,130 °C (3,870 °F; 2,400 K) (decomposes) |
| insoluble | |
| +125.6·10−6 cm3/mol | |
| Hazards | |
EU classification (DSD) (outdated) | not listed |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Titanium(III) oxide is the inorganic compound with the formula Ti2O3. A black semiconducting solid, it is prepared by reducing titanium dioxide with titanium metal at 1600 °C.[1]
Ti2O3 adopts the Al2O3 (corundum) structure.[1] It is reactive with oxidising agents.[1] At around 200 °C there is a transition from semiconducting to metallic conducting.[1] Titanium(III) oxide occurs naturally as the extremely rare mineral tistarite.[2]
Other titanium(III) oxides include LiTi2O4 and LiTiO2.[3]
References
- ^ a b c d Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
- ^ Mindat, http://www.mindat.org/min-38695.html
- ^ Hewston, T.A.; Chamberland, B.L. (1987). "A Survey of first-row ternary oxides LiMO2 (M = Sc-Cu)". Journal of Physics and Chemistry of Solids. 48 (2): 97–108. Bibcode:1987JPCS...48...97H. doi:10.1016/0022-3697(87)90076-X.