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Titanium dioxide, also known as titanium(IV) oxide or titania / t aɪ ˈ t eɪ n i ə /, is the inorganic compound derived from titanium with the chemical formula TiO 2. When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. [4] It is a white solid that is insoluble in water, although mineral forms can appear ...
Anatase is a metastable mineral form of titanium dioxide (TiO 2) with a tetragonal crystal structure. Although colorless or white when pure, anatase in nature is usually a black solid due to impurities.
Brookite is the orthorhombic variant of titanium dioxide (TiO 2), which occurs in four known natural polymorphic forms (minerals with the same composition but different structure). The other three of these forms are akaogiite ( monoclinic ), anatase ( tetragonal ) and rutile ( tetragonal ).
Via the Kroll process, TiCl 4 is used in the conversion of titanium ores to titanium metal. Titanium tetrachloride is also used to make titanium dioxide, e.g., for use in white paint. [19] It is widely used in organic chemistry as a Lewis acid, for example in the Mukaiyama aldol condensation. [20]
Titanium dioxide is the most commonly used compound of titanium. About 95% of all titanium ore is destined for refinement into titanium dioxide (TiO 2), an intensely white permanent pigment used in paints, paper, toothpaste, and plastics. [31] It is also used in cement, in gemstones, and as an optical opacifier in paper. [98] TiO
Rutile is an oxide mineral composed of titanium dioxide (TiO 2), the most common natural form of TiO 2. Rarer polymorphs of TiO 2 are known, including anatase, akaogiite, and brookite. Rutile has one of the highest refractive indices at visible wavelengths of any known crystal and also exhibits a particularly large birefringence and high ...
Titanium(II) oxide (Ti O) is an inorganic chemical compound of titanium and oxygen. It can be prepared from titanium dioxide and titanium metal at 1500 °C. [1] It is non-stoichiometric in a range TiO 0.7 to TiO 1.3 and this is caused by vacancies of either Ti or O in the defect rock salt structure. [1]
As one example, Pauling considered the three mineral forms of titanium dioxide, each with a coordination number of 6 for the Ti 4+ cations. The most stable (and most abundant) form is rutile, in which the coordination octahedra are arranged so that each one shares only two edges (and no faces) with adjoining octahedra.