Tungsten trioxide

Base Information

• Chemical Name: Tungsten trioxide
• CAS No.: 1314-35-8
• Deprecated CAS: 12165-16-1,12165-37-6,12165-45-6,12737-75-6,1328-66-1,160637-48-9,30445-72-8,530099-64-0,611206-70-3,1344994-39-3,627811-63-6,2303937-83-7,2491732-47-7,2567699-94-7,12165-37-6,12165-45-6,12737-75-6,1328-66-1,1344994-39-3,160637-48-9,30445-72-8,530099-64-0,611206-70-3,627811-63-6
• Molecular Formula: WO3
• Molecular Weight: 231.85
• Hs Code.: 28259012
• European Community (EC) Number: 215-231-4
• DSSTox Substance ID: DTXSID7032262
• Wikipedia: Tungsten_trioxide,Tungsten(VI) oxide
• Wikidata: Q417406
• Mol file: 1314-35-8.mol

Synonyms:tungsten oxide;tungsten trioxide;WO3 cpd

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:

99.9% ^*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
• 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.
• 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.
• 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.