cosmetic grade titanium dioxide

For exterior wall paint materials, titanium dioxide plays a critical role in enhancing weather resistance. Its ultraviolet (UV) light absorption characteristics protect the binder system from degradation caused by sunlight exposure. As a result, paints containing titanium dioxide are less likely to fade, chalk, or crack under harsh environmental conditions. Moreover, its chemical stability prevents the pigment from reacting with other paint components, maintaining the integrity of the coating and extending its lifespan.

...

Once the TiO2 is extracted, the focus shifts to rendering it dissolvable. This is achieved through a surface modification technique, where the particles are coated with a specific compound that allows them to disintegrate when exposed to certain conditions, such as water or specific pH levels. These coatings could include organic acids, polymers, or even other inorganic materials, ensuring the controlled dissolution of the titanium dioxide.

...
...