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| Names | |
|---|---|
| IUPAC name titanium(III) oxide | |
| Other names titanium sesquioxide | |
| Identifiers | |
| CAS Number | |
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.014.271 
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| EC Number |
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| PubChem CID | |
| CompTox Dashboard (EPA) | |
InChI
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SMILES
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| Properties | |
| Chemical formula | Ti2O3 |
| Molar mass | 143.76 g/mol |
| Appearance | violet black powder |
| Odor | odorless |
| Density | 4.49 g/cm |
| Melting point | 2,130 °C (3,870 °F; 2,400 K) (decomposes) |
| Solubility in water | insoluble |
| Magnetic susceptibility (χ) | +125.6·10 cm/mol |
| Structure | |
| Crystal structure | Corundum |
| Space group | R3c (No. 167) |
| Lattice constant | a = 543 pmα = 56.75°, β = 90°, γ = 90° |
| Hazards | |
| GHS labelling: | |
| Pictograms | 
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| Signal word | Warning |
| Hazard statements | H413 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa).
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Infobox references
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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.
Ti2O3 adopts the Al2O3 (corundum) structure. It is reactive with oxidising agents. At around 200 °C, there is a transition from semiconducting to metallic conducting. Titanium(III) oxide occurs naturally as the extremely rare mineral in the form of tistarite.
Other titanium(III) oxides include LiTi2O4 and LiTiO2.
References
- Robinson, William R. (1974). "The crystal structures of Ti2O3, a semiconductor, and (Ti0.900V0.100)2O3, a semimetal". Journal of Solid State Chemistry. 9 (3). Elsevier BV: 255–260. Bibcode:1974JSSCh...9..255R. doi:10.1016/0022-4596(74)90082-6. ISSN 0022-4596.
- "C&L Inventory". echa.europa.eu. Retrieved 12 December 2021.
- ^ 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.
| Titanium compounds | |||||
|---|---|---|---|---|---|
| Titanium(II) |
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| Titanium(III) |
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| Titanium(IV) |
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