Chemical properties:
Titanium dioxide has extremely stable chemical properties and is a kind of acidic amphoteric oxide. It hardly reacts with other elements and compounds at normal temperature, and has no effect on oxygen, ammonia, nitrogen, hydrogen sulfide, carbon dioxide and sulfur dioxide. It is insoluble in water, fat, dilute acid, inorganic acid and alkali, and only soluble in hydrofluoric acid. However, under the action of light, titanium dioxide can undergo continuous oxidation-reduction reaction and has photochemical activity. This kind of photochemical activity is particularly evident in anatase titanium dioxide under ultraviolet irradiation. This property makes titanium dioxide both a photosensitive oxidation catalyst for some inorganic compounds and a photosensitive reduction catalyst for some organic compounds.
Emergency treatment: isolate the leakage contaminated area and restrict access. It is recommended that emergency treatment personnel wear dust masks (full masks) and general work clothes. Avoid raising dust, sweep it carefully, place it in a bag and transfer it to a safe place. If there is a large amount of leakage, cover it with plastic cloth and canvas. Collect and recycle or transport to the waste treatment site for disposal.
Titanium dioxide (or titanium dioxide) is widely used in various structural surface coatings, paper coatings and fillers, plastics and elastomers. Other applications include ceramics, glass, catalysts, coated fabrics, printing inks, roof paving and flux. According to statistics, the global demand for titanium dioxide in 2006 reached 4.6 million tons, of which the coating industry accounted for 58%, the plastics industry 23%, papermaking 10% and others 9%. Titanium dioxide can be made from ilmenite, rutile and titanium slag. There are two kinds of titanium dioxide production processes: sulfate process and chloride process. The sulfate process is simpler than the chloride process. Minerals with low grade and relatively cheap can be used. Today, about 47% of the world`s production capacity is sulfate process, and 53% is chloride process.
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