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TUNGSTEN (IV) OXIDE

Basic information Safety Supplier Related

TUNGSTEN (IV) OXIDE Basic information

Product Name:
TUNGSTEN (IV) OXIDE
Synonyms:
  • Tungsten(IV) oxide, 99.9% (metals basis)
  • Wolfram(IV)dioxide
  • Tungsten(IV) oxide -100 mesh, 99.99% trace metals basis
  • Tungsten(IV) oxide, 99.9% trace metals basis
  • Tungsten oxide (WO2)
  • WO2
  • TUNGSTEN DIOXIDE
  • TUNGSTEN OXIDE
CAS:
12036-22-5
MF:
O2W
MW:
215.84
EINECS:
234-842-7
Product Categories:
  • metal oxide
  • TungstenMetal and Ceramic Science
  • Catalysis and Inorganic Chemistry
  • Chemical Synthesis
  • Oxides
  • Tungsten
Mol File:
12036-22-5.mol
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TUNGSTEN (IV) OXIDE Chemical Properties

Melting point:
1500-1600°C
Boiling point:
1730℃[at 101 325 Pa]
Density 
12,11 g/cm3
form 
Powder
Specific Gravity
12.11
color 
brown
Water Solubility 
Soluble in acid and potassium hydroxide. Insoluble in water.
Exposure limits
ACGIH: TWA 3 mg/m3
NIOSH: TWA 5 mg/m3; STEL 10 mg/m3
CAS DataBase Reference
12036-22-5(CAS DataBase Reference)
EPA Substance Registry System
Tungsten oxide (WO2) (12036-22-5)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
37
Safety Statements 
26-36
WGK Germany 
3
TSCA 
Yes

MSDS

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TUNGSTEN (IV) OXIDE Usage And Synthesis

Chemical Properties

brown powder(s), may become purple on standing; formed when WO3 is reduced by H2 at 575°C–600°C [KIR83] [STR93]

Uses

Tungsten(IV) oxide is used in the production of tungsten and tungstates, in alloys, in fire-proofing fabrics and as a ceramic pigment. It is used to study their chromism, photocatalysis and sensing capabilities. It is associated with rhenium trioxide particles and used for detection of protonatable, radical and precharged species under laser desorption ionization.

Flammability and Explosibility

Nonflammable

TUNGSTEN (IV) OXIDESupplier

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