Tungsten trioxide , Element analyzer dedicated , 1314-35-8

Synonym(s):
Tungsten trioxide nanowires;Tungstic anhydride

CAS NO.：1314-35-8

Empirical Formula: O3W

Molecular Weight: 231.84

MDL number: MFCD00011466

EINECS: 215-231-4

PRODUCT Properties

• Melting point: 1470-1475 °C
• Boiling point: 1837°C (estimate)
• Density: 7.16 g/mL at 25 °C(lit.)
• storage temp.: Room Temperature
• solubility: insoluble in H2O, organic solvents; slightly soluble in acid solutions; soluble in alkaline solutions
• form: powder
• Specific Gravity: 7.16
• color: Yellow to greenish-yellow
• Water Solubility: insoluble
• crystal system: Monoclinic
• Merck: 14,9817
• Space group: P21/a
• Lattice constant:
  • a/nm: 0.7285
  • b/nm: 0.7517
  • c/nm: 0.3835
  • α/o: 90
  • β/o: 90.9
  • γ/o: 90
  • V/nm3: 0.21
• Exposure limits: ACGIH: TWA 3 mg/m3; NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
• InChIKey: ZNOKGRXACCSDPY-UHFFFAOYSA-N
• CAS DataBase Reference: 1314-35-8(CAS DataBase Reference)
• NIST Chemistry Reference: Tungsten trioxide(1314-35-8)
• EPA Substance Registry System: Tungsten trioxide (1314-35-8)

Description and Uses

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.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H302
• Precautionary statements: P264-P270-P301+P312a-P330-P501a
• Hazard Codes: Xn
• Risk Statements: 22-36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: -
• RTECS: YO7760000
• F: 21
• TSCA: Yes
• HS Code: 28259012
• Hazardous Substances Data: 1314-35-8(Hazardous Substances Data)
• Toxicity: rat,LD50,oral,1059mg/kg (1059mg/kg),BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)BEHAVIORAL: EXCITEMENTBEHAVIORAL: MUSCLE WEAKNESS,Hygiene and Sanitation Vol. 31(7-9), Pg. 197, 1966.