3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||143.76 g/mol|
|Appearance||violet black powder|
|Melting point||2,130 °C (3,870 °F; 2,400 K) (decomposes)|
|R3c (No. 167)|
a = 543 pm
α = 56.75°, β = 90°, γ = 90°
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.
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.