TITANIUM DIOXIDE (TIO2)
CAS number:13463-67-7
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Molecular Formula:
O2Ti / TiO2
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Molecular Weight:
79.866 g/mol
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Brief Introduction:
Titanium dioxide (TiO2) is a versatile and earth-abundant material that is widely used in many fields. In terms of food additives, although the European Food Safety Authority (EFSA) concluded in 2021 that E171 (food-grade TiO2) may be genotoxic based on some research results and recommended that it should no longer be considered a safe food additive, this conclusion has been questioned by experts from many countries, including the United Kingdom, Health Canada, Food Standards Australia New Zealand (FSANZ) and the US Food and Drug Administration (FDA). These experts pointed out that many of the research methods supporting EFSA's conclusions are not suitable for assessing actual exposure to TiO2 in food, and emphasized that the existing evidence is insufficient to prove that it is harmful to humans. In addition, the application of TiO2 as a nanomaterial in concrete has also shown significant advantages, such as improving mechanical properties, reducing drying shrinkage and water absorption, reducing porosity, and enhancing durability. Studies have shown that when 1.5% TiO2 is added to rubber concrete, the best strength and other performance indicators can be achieved. In sustainable energy technology, although titanium is included in the list of key materials in Europe and the United States due to its high strength and low density, TiO2 itself is not considered a key material, mainly due to its importance in non-energy terminal applications. In general, as a multifunctional material, the application of TiO2 in different fields and its safety assessment are complex and diverse.
Inorganic Compounds
As a metal oxide, TiO₂ is considered an inorganic compound.
White Pigments
Titanium Dioxide is widely used as a white pigment in paints, coatings, plastics, and cosmetics, categorized as a pigment.
Photocatalysts
TiO₂ is known for its photocatalytic properties, often used in applications such as self-cleaning surfaces and water purification.
Oxides
TiO₂ is a member of the oxide family, as it is composed of titanium and oxygen atoms.
Nanomaterials
TiO₂ nanoparticles are used in various applications, including sunscreen, due to their high surface area and UV-blocking properties.
Food Additives
Titanium Dioxide is used in food and pharmaceuticals as a coloring agent, although its use in food has been questioned in some countries due to health concerns.
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