Name: Tungsten(VI) Oxide, Tungsten trioxide Molecular formula: WO3
CAS: 1314-35-8 Molecular weight: 231.84
Description: Tungsten trioxide, also known as tungsten oxide, has the chemical formula WO3. Light yellow triclinic powder crystal. When the temperature is above 740 ℃, it transforms into an orange tetragonal crystal system, which returns to its original state after cooling. Stable in air, with a melting point of 1473 ℃, a boiling point above 1750 ℃, and a relative density of 7.16. Tungsten trioxide is the most stable type of tungsten oxide, insoluble in water and inorganic acids other than hydrofluoric acid. It can dissolve in hot concentrated sodium hydroxide solution and ammonia water to form soluble tungstate salts. When the temperature is above 650 ℃, it can be reduced by H2, and at 1000-1100 ℃, it can be reduced by C to obtain tungsten powder.
Specification:
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Name |
WO3_3N |
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Molecular formula |
WO3 |
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CAS |
1314-35-8 |
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WO3 content |
% |
≥99.9 |
|
|
|
Na |
% |
≤10×10-4 |
|
Mg |
% |
≤10×10-4 |
|
|
Al |
% |
≤10×10-4 |
|
|
Ca |
% |
≤10×10-4 |
|
|
Cr |
% |
≤5×10-4 |
|
|
Mn |
% |
≤5×10-4 |
|
|
Fe |
% |
≤10×10-4 |
|
|
Cu |
% |
≤5×10-4 |
|
|
Zn |
% |
≤5×10-4 |
|
|
Ag |
% |
≤5×10-4 |
|
|
Sn |
% |
≤5×10-4 |
|
|
Pb |
% |
≤5×10-4 |
|
|
property |
Yellow to greenish-yellow powder |
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|
Application |
It is mainly used in the production of tungsten metal, alloy steel, fire-resistant fabrics, and in the ceramic industry |
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package |
Conventional packaging, flexible packaging according to customer needs |
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Packing: 25 kg plastic bucket, also provide small package: 100g, 500g, and other small packages
Uses: It can be used as a raw material for making tungsten metal, manufacturing hard alloys, cutting tools, molds, and drawing tungsten wires. It can also be used in powder metallurgy, X-ray screens, fireproof fabrics, as well as as as colorants and analytical reagents for ceramics. Blue tungsten oxide is used for the production of tungsten powder, doped with tungsten powder, tungsten bars, tungsten rods And hard alloys, etc. Yellow tungsten oxide is used for electroplating and production of other cobalt products, barometers, and hydrometers.
