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550086

Sigma-Aldrich

Tungsten(VI) oxide

nanopowder, <100 nm particle size (TEM)

Synonym(s):

Tungstic anhydride

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About This Item

Linear Formula:
WO3
CAS Number:
1314-35-8
Molecular Weight:
231.84
EC Number:
215-231-4
MDL number:
MFCD00011466
UNSPSC Code:
12352302
PubChem Substance ID:
24879090
NACRES:
NA.23

form

nanopowder

particle size

<100 nm (TEM)

density

7.16 g/mL at 25 °C (lit.)

SMILES string

O=[W](=O)=O

InChI

1S/3O.W

InChI key

ZNOKGRXACCSDPY-UHFFFAOYSA-N

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General description

Tungsten oxide (WO3) nanopowder is a metallic powder that can be prepared by the calcination of ammonium paratungstate (APT) in the temperature range of 560°C and 850°C. It can be produced by a variety of techniques, such as electrodeposition, sputtering, milling, and chemical processes.

Application

WO3 can be used for a variety of applications, such as electronics, optics, gas sensors and elecctrochromism.

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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?Writing-Reading-Erasing? on tungsten oxide films using the scanning electrochemical microscope
Turyan I, et al.
Advanced Materials, 12(5), 330-333 (2000)
A thin-film sensing element for ozone, humidity and temperature
Qu W and Wlodarski W
Sensors and Actuators B, Chemical, 64(1-3), 42-48 (2000)
Structural Properties of Pure and Nickel-Modified Nanocrystalline Tungsten Trioxide.
Fujioka Y, et al.
The Journal of Physical Chemistry C, 116(32), 17029-17039 (2012)
Chemical vapor synthesis (CVS) of tungsten nanopowder in a thermal plasma reactor
Ryu T, et al.
International Journal of Refractory Metals & Hard Materials, 27(1), 149-154 (2009)
Structure and electronic properties of solid acids based on tungsten oxide nanostructures
Barton DG, et al.
The Journal of Physical Chemistry B, 103(4), 630-640 (1999)
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