The most significant uncertainty identified by the EU experts was the concern that TiO2 particles may have genotoxic effects. Genotoxicity refers to the ability of a chemical to directly damage genetic material within a cell (DNA), which may lead to cancer in certain situations. Although the experts did not conclude that TiO2 particles in E171 are genotoxic, they could not rule out the concern that they might be.
Even though it is one of the most-produced chemicals, the real and potential benefits of titanium dioxide are not without controversies. Dust inhalation may cause breathing problems. Titanium dioxide has been classified by the International Agency for Research on Cancer as an Group 2B carcinogen, a “possible carcinogen to humans,” based on studies of rats that inhaled the substance.
The functions of lithopone in coatings: it is mainly used in water-soluble coatings (water-soluble coatings, wall coatings), blending paint as topcoat (with reasonable high paint adhesion, excellent circulation and long storage capacity), all kinds of methyl cellulose paint (can be applied to wooden furniture such as furniture and small toys) Alkali resistant coatings based on isopropyl titanate vulcanized rubber and polyurethane materials. Also because of its excellent paint adhesion, aging resistance, acid resistance and leveling, for the production of lacquered cloth color pigments look better. It can also be used in electrophoretic coating and optical guiding system software.
It is naturally opaque and bright, which makes it useful for use in paper, ceramics, rubber, textiles, paints, inks and cosmetics.It is also resistant to ultraviolet (UV) light, and is used widely in sunscreens and pigments that are likely to be exposed to UV light. It is used in a wide variety of personal care products, including color cosmetics such as eye shadow and blush, loose and pressed powders and in sunscreens.