The titanium dioxide formula is TiO2. It is made up of two atoms of oxygen and one atom of titanium which is the 9th most common element in the crust of the earth and it is present generally in plants and animals. In order to form titanium dioxide, the metal of titanium reacts naturally with oxygen. This oxide is commonly found in sands, soils, ores, indigenous, and dust. It is also referred to as titanium (IV) oxide.