Titanium Dioxide TiO2 CAS 13463-67-7
The chemical properties of titanium dioxide are very stable, and it is an acidic amphoteric oxide. At room temperature, it hardly reacts with other elements and compounds, has no effect on oxygen, ammonia, nitrogen, hydrogen sulfide, carbon dioxide and sulfur dioxide, is insoluble in water and fat, is insoluble in dilute acid, inorganic acid and alkali, and is only soluble in hydrofluoric acid. However, under the action of light, titanium dioxide has continuous redox reaction and photochemical activity. This photochemical activity is especially obvious in anatase titanium dioxide under ultraviolet irradiation, which makes titanium dioxide not only a photosensitive oxidation catalyst for some inorganic compounds, but also a photosensitive reduction catalyst for some organic compounds.
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