Titanium oxide, 1700 white; P 25; horse head r-710; KH360; kronos; kronos 2073; kronos cl 220; kronos rn 40p; kronos rn 56; kronos titanium dioxide; levanox white rkb; octahedrite; R 680; Rayox; RO 2; runa arh 20; runa arh 200; runa rh20; rutile; rutiox cr; tiofine; tiona t.d.; tioxide; tioxide ad-m; tioxide r-cr; tioxide rhd; tioxide rsm; tioxide r.xl; tipaque; tipaque r 820; ti-pure; ti-pure r 101; ti-pure r 900; ti-pure r 901; ti-pure r 915; titafrance; titanic acid anhydride; titania; titanic anhydride; titanic oxide; Titanium dioxide.
Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula TiO2. When used as a pigment, it is called titanium white, Pigment White 6, or CI 77891. It is noteworthy for its wide range of applications, from paint to sunscreen to food colouring. Titanium dioxide is the most widely used white pigment because of its brightness and very high refractive index (n=2.7), in which it is surpassed only by a few other materials. TiO2 is also an effective opacifier in powder form, where it is employed as a pigment to provide whiteness and opacity to products such as paints, coatings, plastics, papers, inks, foods, medicines (i.e. pills and tablets) as well as most toothpastes. Used as a white food colouring, it has E number E171. In cosmetic and skin care products, titanium dioxide is used both as a pigment and a thickener. It is also used as a tattoo pigment and styptic pencils. This pigment is used extensively in plastics and other applications for its UV resistant properties where it acts as a UV absorber, efficiently transforming destructive UV light energy into heat.