|Abstract from DBPedia||
Titanium dioxide, also known as titanium(IV) oxide or titania /taɪˈteɪniə/, is the inorganic compound with the chemical formula TiO2. When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. It is a white solid that is insoluble to water, although mineral forms can appear black. As a pigment, it has a wide range of applications, including paint, sunscreen, and food coloring. When used as a food coloring, it has E number E171. World production in 2014 exceeded 9 million tonnes. It has been estimated that titanium dioxide is used in two-thirds of all pigments, and pigments based on the oxide have been valued at a price of $13.2 billion.
酸化チタン(IV)（さんかチタン よん、英: titanium(IV) oxide）は組成式 TiO2、式量79.9の無機化合物。チタンの酸化物で、二酸化チタン(英: titanium dioxide)や、単に酸化チタン(英: titanium oxide)、およびチタニア(英: titania)とも呼ばれる。 天然には金紅石（正方晶系）、鋭錐石（正方晶系）、板チタン石（斜方晶系）の主成分として産出する無色の固体で光電効果を持つ金属酸化物。屈折率はダイヤモンドよりも高い。