Titanium dioxide nanoparticles are commonly found in a wide-range of consumer goods, including cosmetics, sunscreens, paints and colorings, ceramics, glass, textiles, construction materials, medicine, food, food packaging, and more. In Europe, cosmetic companies are required to label products that contain nanoparticles. In the U.S., companies are not.

Comparisons

It's also worth noting that even prior to the EU decision, France had already outlawed titanium dioxide in food back in January 2020.

It is a white crystalline powder, which is a mixture of zinc sulfide and barium sulfate. The more zinc sulfide it contains, the stronger the hiding power and the higher the quality. The density of lithopone is 4.136~4.34/cm3 and it is insoluble in water. It easily decomposes when exposed to acid to produce hydrogen sulfide gas, but does not work when exposed to hydrogen sulfide and alkaline solutions.

Thermogravimetric analysis (TGA) was conducted in a sample of vitaminB2@P25TiO₂NPs using a TA-THA Q5000 equipment. Temperature ramp rate: 10 °C/min, maximum temperature: 1000 °C, under air. Part of the same sample was mounted on conductive copper tape grids and observed through a Carl Zeiss Sigma scanning electron microscope (SEM) with an EDS probe, at the “Laboratorio de Microscopía y Análisis por Rayos X” (LAMARX) of National University of Córdoba (Argentina).