Opportunities
This classification was given, as some animal studies found that inhaling titanium dioxide dust might cause the development of lung tumors. However, IARC concluded that food products containing this additive do not pose this risk (11).
EFSA's evaluation is related to the risks of TiO2 used as a food additive, not to other uses.
Skin-penetration studies
A dense, white, opaque pigment composed of a mixture of Zinc sulfide (30%) and Barium sulfate (70%) with trace amounts of Zinc oxide. Lithopone, first produced in 1874, was called Orr's white. The mixture of the two components is so intimate that it is hard to distinguish microscopically. Lithopone is an inert, transparent pigment which is often used as a filler or as a base for lake pigments. Lithopone was widely used in house paints in the first half of the 20th century. It was also used for some artist grounds, inks and as a filler in Paper, Leather, and Linoleum. Now lithopone has mostly been replaced by Titanium dioxide.
Public health groups urge FDA to cancel titanium dioxide in food, by Center for Science in the Public Interest, May 30, 2023
Specific gravity: