Titanium dioxide is produced in two main forms. The primary form, comprising over 98 percent of total production, is pigment grade titanium dioxide. The pigmentary form makes use of titanium dioxide’s excellent light-scattering properties in applications that require white opacity and brightness. The other form in which titanium dioxide is produced is as an ultrafine (nanomaterial) product. This form is selected when different properties, such as transparency and maximum ultraviolet light absorption, are required, such as in cosmetic sunscreens.
1: Flocculation principle
This article reviews the uses, benefits, and safety of titanium dioxide.
Sulphate process. The ilmenite is reacted with sulphuric acid giving titanium sulphate and ferric oxide. After separation of ferric oxide, addition of alkali allows precipitation of hydrous titanium dioxide. The washed precipitate is calcined in a rotary kiln to render titanium dioxide. The nucleation and calcination conditions determine the crystalline structure of titanium dioxide (e.g. rutile or anatase).


This article was written by Kamilah Guiden and reviewed by Megan Meyer, PhD.
Titanium dioxide, or TiO2, sometimes referred to as E171, is an inorganic, solid substance used in a wide range of consumer goods including cosmetics, paint, plastic and food, according to the American Chemistry Council.

Nano titanium dioxide is a versatile material that is used in many different industries due to its unique properties
. As a leading manufacturer of nano titanium dioxide, we pride ourselves on producing high-quality products that meet the needs of our customers.On absorption of UV light, photo-generated titanium dioxide particles create singlet oxygen, superoxide anions (O2-) and hydroxyl radicals (OH-) that are potent free radicals (1,2). Irradiated particles of titanium dioxide can induce oxidative damage to DNA (2) which can lead to the development of mutant cells and skin cancers (3,4,5,6) and lipid peroxidation of essential functions on the cell membrane (7).
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.


What’s recently changed with titanium dioxide and regulations?
Cover power(contrast to the sample)
Studies of titanium dioxide as a food additive suggest health dangers
I don't see the scientific evidence in the literature that would cause people any concern, said Kaminski.
Skittles has been making headlines in recent weeks and not because a new flavor has been added to the popular taste the rainbow candy.