What property is tungsten dioxide?
It is a yellow triclinic powder-crystal. The chemical formula for this is WO3. If the temperature exceeds 740degC, the tungsten oxide crystals become orange tetragonals. They return to their original state upon cooling. Tungsten dioxide powder is stable in air. It has an average melting point of 1473°C and a boiling point greater than 1750°C. It also has a relative density of 7.16.
Tungsten dioxide is insoluble in water, inorganic acid other than hydrofluoric. To make soluble tungstate, dissolve WO3 in hot concentrated sodium hydroxyide solution with ammonia. If the temperature is above 650 degrees, it can be reduced with H2 and reduced by C to make tungsten-powder at 1000-1100.
What is the application of tungsten oxide?
Everyday life has many uses for tungsten oxide. It is commonly used in the manufacture of tungstate by using industrial X-ray screen and fireproof fabrics. Its rich yellow components make it a popular pigment in paints and ceramics.
The production of smart windows and electrochromic windows has been made possible by the use of tungsten oxide. These windows include the glass of the electric switch, the light transmission quality and the applied voltage variation. This allows users to tint windows using changes in heat or light. High-density explosives made of inert metallic explosives are another option. These devices were used more frequently in the 2008-2009 conflict involving Israel and Gaza Strip.
Some tungsten oxide can be used to make chemical products like paints and coatings and petroleum industry catalysts. But tungstenoxide is an intermediate product. It is used in metal-tungsten powder and metal tungsten carbide powder. This is followed by the production of metal products. The most common in modern industrial fields is tungsten metal carbide products.
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