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What property does tungsten dioxide have?
The chemical formula of WO3 is a powdery light yellow triclinic crystal. The tungsten dioxide crystals become orange when the temperature exceeds 740degC. They return to their original state upon cooling. Tungsten dioxide powder is stable at air temperatures, with a melting and boiling point above 1750degC.
Tungsten Oxide is not soluble in water, nor in any inorganic acid other than hydrofluoric. In hot concentrated sodium chloride solution, WO3 can be dissolved to form soluble ammonia. When the temperature exceeds 650°C, it can be reduced with H2, and by C at 1000-1100°C to get tungsten.
What is tungsten dioxide application?
Tungsten dioxide is used in many ways every day. The tungsten oxide is commonly used to create tungstate. Due to the yellow pigments it contains, tungsten dioxide is used in ceramics and as a colorant.
The production of smart and electrochromic windows has used tungsten oxide. These windows are the glass with the electric switch, the performance of light transmission and the applied voltage. Users can tint their windows by changing how much heat or light is being applied. Use of high-density, inert metals is another option. In the 2008-2009 war between Israel and Gaza Strip, the use of these explosives was more prominent.
Some tungsten oxide can be used to make chemical products like paints, coatings, catalysts in the petroleum industry, etc. Although tungsten dioxide is an intermediary product, it is also used in the production and application of metal alloys such as tungsten copper and nickel, tungsten iron and silver, or tungsten carbide.
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