| Identification | More | [Name]
TUNGSTEN (IV) OXIDE | [CAS]
12036-22-5 | [Synonyms]
TUNGSTEN DIOXIDE
TUNGSTEN (IV) OXIDE
TUNGSTEN OXIDE
Tungsten oxide (WO2)
WO2
TUNGSTEN(IV) OXIDE,-100 MESH, 99.99%
TUNGSTEN (IV) OXIDE (99.9%-W)
WO2,99.9%(metalsbasis)
Tungsten(Ⅳ)oxide
TUNGSTEN(IV) OXIDE: 99.9%,-150 MICRON
TUNGSTEN(IV) OXIDE: 99.9%
Tungsten(IV) oxide, 99.9% (metals basis)
Wolfram(IV)dioxide | [EINECS(EC#)]
234-842-7 | [Molecular Formula]
O2W | [MDL Number]
MFCD00049709 | [Molecular Weight]
215.84 | [MOL File]
12036-22-5.mol |
| Hazard Information | Back Directory | [Chemical Properties]
brown powder(s), may become purple on standing; formed when WO3 is reduced by H2 at 575°C–600°C [KIR83] [STR93] | [Description]
Tungsten(IV) oxide, WO2, is a bronze-colored solid that crystallizes in a monoclinic cell. The rutile-like structure features distorted octahedral WO6 centers with alternate short W-W bonds (248 pm). Each tungsten center has the d2 configuration, which gives the material a high electrical conductivity. WO2 is prepared by reduction of WO3 with tungsten
powder in about 40 h at 900℃. An intermediate in this reaction is the partially reduced, mixed valence species W18O49.
2WO3 + W→3WO2 | [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 |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R37:Irritating to the respiratory system. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [WGK Germany ]
3
| [TSCA ]
Yes |
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