Titanium dioxide, also known as
titanium(IV) oxide or
titania, is the naturally occurring
oxide of
titanium, chemical formula . 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.