A white metallic transition element; a.n. 22; r.a.m. 47.9; r.d. 4.5; m.p. 1660±10°C; b.p. 3287°C. The main sources are rutile (TiO2) and, to a lesser extent, ilmenite (FeTiO3). The element also occurs in numerous other minerals. It is obtained by heating the oxide with carbon and chlorine to give TiCl4, which is reduced by the Kroll process. The main use is in a large number of strong light corrosion-resistant alloys for aircraft, ships, chemical plant, etc. The element forms a passive oxide coating in air. At higher temperatures it reacts with oxygen, nitrogen, chlorine, and other nonmetals. It dissolves in dilute acids. The main compounds are titanium(IV) salts and complexes; titanium(II) and titanium(III) compounds are also known. The element was first discovered by William Gregor (1761–1817) in 1791.
https://www.webelements.com/titanium/ Information from the WebElements site