Titanium dioxide
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![Evolution of the global production of titanium dioxide according to process.](/Images/godic/202502/16/Evolution_production_dioxyde_de_titane.svg4713.png")
![Titanium oxide nanotubes, SEM image](/Images/godic/202502/16/TiO2nanotube4713.jpg")
Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula TiO
2. When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. Generally it is sourced from ilmenite, rutile and anatase. It has a wide range of applications, from paint to sunscreen to food colouring. When used as a food colouring, it has E number E171.