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CAS No 1314-35-8 , trioxotungsten

  • Name: trioxotungsten
  • Synonyms: 1314-35-8; Tungsten(VI) oxide;TUNGSTEN TRIOXIDE;trioxotungsten; Tungsten Blue; Tungstic acid anhydride; Tungstic anhydride; Tungstic oxide; trioxotungsten;
  • CAS Registry Number:
  • Melting Point: 1470-1475 ºC
  • Flash Point: °C
  • Boiling Point: ~1700ºC
  • Density: 7.16
  • Safety Statements: R22;R36/37/38
  • Hazard Symbols: Xn: Harmful;
  • Flash Point: °C
  • EINECS: 215-231-4
  • Molecular Weight: 231.8382
  • InchiKey: ZNOKGRXACCSDPY-UHFFFAOYSA-N
  • InChI: InChI=1S/3O.W
  • Risk Statements: S26;S37/39
  • Molecular Formula: O3W
  • Molecular Structure:CAS No:1314-35-8 trioxotungsten

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References of trioxotungsten
Title: Tungsten Trioxide
CAS Registry Number: 1314-35-8
CAS Name: Tungsten oxide (WO3)
Synonyms: tungstic anhydride
Molecular Formula: O3W
Molecular Weight: 231.84
Percent Composition: O 20.70%, W 79.30%
Line Formula: WO3
Literature References: Prepn from sodium tungstate: Hein, Herzog, in Handbook of Preparative Inorganic Chemistry vol. 2, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1965) pp 1423-1424. Review of toxicology and human exposure: Toxicological Profile for Tungsten (PB2006-100007, 2005) 203 pp.
Properties: Canary yellow, heavy powder; dark orange when heated, regaining the original color on cooling. Insol in water. Sol in caustic alkalies; very slightly sol in acids.
Use: Manuf tungstates which are used for x-ray screens and for fireproofing fabrics.