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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 ...
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 ]
Orthotitanates have the formula M 2 TiO 4, where M is divalent.An example of such a material is magnesium titanate (Mg 2 TiO 4), which adopts the spinel structure.Li 2 TiO 3 is not considered an orthotitanate since it adopts the rock-salt structure and does not feature an identifiable titanium anion.
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] In the van Arkel–de Boer process, titanium tetraiodide (TiI 4) is generated in the production of high purity titanium metal. [21]
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 ...
Brookite belongs to the orthorhombic dipyramidal crystal class 2/m 2/m 2/m (also designated mmm). The space group is Pcab and the unit cell parameters are a = 5.4558 Å, b = 9.1819 Å and c = 5.1429 Å. The formula is TiO 2, with 8 formula units per unit cell. [1] [3] [4]
A common reduced titanium oxide is TiO, also known as titanium monoxide. It can be prepared from titanium dioxide and titanium metal at 1500 °C. [4] Ti 3 O 5, Ti 4 O 7, and Ti 5 O 9 are non-stoichiometric oxides. These compounds are typically formed at high temperatures in the presence of excess oxygen.
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
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