Chemical Property of Tungsten trioxide
Chemical Property:
- Appearance/Colour:yellow to greenish-yellow powder
- Melting Point:1470-1475 °C
- Boiling Point:~1700oC
- PSA：51.21000
- Density:7.16 g/mL at 25 °C(lit.)
- LogP:-0.35640
- Storage Temp.:Room Temperature
- Water Solubility.:insoluble
- Hydrogen Bond Donor Count:0
- Hydrogen Bond Acceptor Count:3
- Rotatable Bond Count:0
- Exact Mass:231.935677
- Heavy Atom Count:4
- Complexity:61.8
- Purity/Quality:
-
98% *data from raw suppliers
Tungsten(VI) oxide *data from reagent suppliers
Safty Information:
- Pictogram(s):
Xn
- Hazard Codes:Xn
- Statements:
22-36/37/38
- Safety Statements:
26-36-37/39
- MSDS Files:
-
SDS file from LookChem
Total 1 MSDS from other Authors
Useful:
- Chemical Classes:Metals -> Metals, Inorganic Compounds
- Canonical SMILES:O=[W](=O)=O
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Description
Tungsten trioxide is a chemical compound consisting of oxygen and
the transition metal tungsten. It occurs naturally but rarely in the
form of hydrates in some kinds of minerals. It has various
applications. In industry, it can be used for making x-ray screen
phosphors, fireproofing fabrics and gas sensors as well as a pigment
in ceramics and paints. It can also be used for the preparation of
electrochromic windows or smart windows. In addition, it can be used
in semiconductors. It, together with titanium dioxide, has the
potential to become an efficient photo-catalyst under visible light
irradiation. Recent study has shown that mesoporous tungsten
trioxide polyaniline nanocomposite can be used as an anode material
for high-performance lithium-ion batteries.
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Uses
Tungsten trioxide is a thermally stable and water insoluble tungsten compound. Tungsten trioxide andTungsten blue oxides are both used in the production of tungsten metal powders. The greatmajority of metallic tungsten is used to make cemented carbide parts, and theremainder is used in manufacturing components for lighting, electrical, electronic,heating, and welding applications; and in tool steels, alloys, catalysts, pigments, andhigh-temperature lubricants. It is used in tungsten and tungstate manufacturing which are used as X-ray screens and for fire proofing fabrics. It is used as a ceramic pigment. Nanowires of Tungsten (VI) oxide are capable of absorbing a higher percentage of the sun radiation since it absorbs blue light. manufacture of tungstates which are used for x-ray screens and for fireproofing fabrics. Tungsten oxide (WO3) is used to make tungsten alloys. Tungsten oxide is also used as fireproofing
for various surfaces and is used as a yellow pigment in ceramics.
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Physical properties
Heavy yellow powder; turns dark orange on heating; reverts back to yellow on cooling; density 7.2 g/cm3; melts at 1,472°C; insoluble in water; slightly soluble in acids; soluble in caustic alkalies.
