Titanium dioxide (TiO2) combines the properties of optimum particle size, highest refractive index and lowest specific gravity.
It is the strongest of the white pigment and ensures the development of highest opacity on the medium with the minimum weight of the pigment.
In opacifying power, one part by weight of TiO2 pigment would be equivalent to 4 parts of lithopone, 6 to 8 parts of zinc oxide and 10 to 12 parts of white lead.
Titanium dioxide pigment is produced in the following two types:
Anatase and Rutile Titanium dioxide pigments have specific end use applications due to their particular properties.
Both anatase and rutile pigments have their distinct application of their own due to difference in the properties of hardness, tinting strength, light fastness and particle size of the two type of pigments.
Used in paint, paper, plastics and other industries
Pigment grade Titanium dioxide is produced both by Sulphate process and Chloride process.In the case of sulphate process, both anatase and rutile TiO2 pigment can be produced. In the case of chloride process only, rutile TiO2 pigment can be produced.
Global installed capacity (Period 2010)
6.34 million metric tonnes per annum
Global demand for TiO2(Both anatase and rutile grade)
5.5 million metric tonnes per annum
Growth rate through 2020
4.1% per year
Major global producers include the following :
- Cristal Global
- Huntsman Tioxide