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MilliporeSigma

267554

Sigma-Aldrich

Tungsten

wire, diam. 0.25 mm, ≥99.9% trace metals basis

Synonym(s):

W

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9.5 G
$84.40

$84.40


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About This Item

Empirical Formula (Hill Notation):
W
CAS Number:
Molecular Weight:
183.84
EC Number:
MDL number:
UNSPSC Code:
12141747
PubChem Substance ID:
NACRES:
NA.23

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Quality Level

assay

≥99.9% trace metals basis

form

wire

resistivity

4.9 μΩ-cm, 20°C

diam.

0.25 mm

bp

5660 °C (lit.)

mp

3410 °C (lit.)

density

19.3 g/mL at 25 °C (lit.)

SMILES string

[W]

InChI

1S/W

InChI key

WFKWXMTUELFFGS-UHFFFAOYSA-N

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This Item
267562GF83063202GF13753605
assay

≥99.9% trace metals basis

assay

99.99% trace metals basis

assay

99.95%

assay

99.95%

form

wire

form

wire

form

wire

form

wire

density

19.3 g/mL at 25 °C (lit.)

density

19.3 g/mL at 25 °C (lit.)

density

19.3 g/mL at 25 °C (lit.)

density

19.3 g/mL at 25 °C (lit.)

mp

3410 °C (lit.)

mp

3410 °C (lit.)

mp

3410 °C (lit.)

mp

3410 °C (lit.)

bp

5660 °C (lit.)

bp

5660 °C (lit.)

bp

5660 °C (lit.)

bp

5660 °C (lit.)

resistivity

4.9 μΩ-cm, 20°C

resistivity

4.9 μΩ-cm, 20°C

resistivity

4.9 μΩ-cm, 20°C

resistivity

4.9 μΩ-cm, 20°C

Application

Tungsten (W) wire can be used for a variety of applications such as:
  • fabrication of tungsten tips which can be used as field emitters, nanoprobes and scanning tunneling microscope (STM) probes.[1]
  • increase of the band gap of amorphous silicon germanium alloy.[2]
  • formation of tungsten fibers for potential usage in the lighting industry.[3]

Preparation Note

9.5 g = 10 m; 95 g = 100 m

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, type P3 (EN 143) respirator cartridges


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Tungsten fibre-reinforced composites for advanced plasma facing components
Neu R, et al.
Nuclear Materials and Energy, 12(1-2), 1308-1313 (2017)
Recrystallization of tungsten wire for fabrication of sharp and stable nanoprobe and field-emitter tips
Greiner M and Kruse P
The Review of Scientific Instruments, 78(2), 026104-026104 (2007)
Improving narrow bandgap a-SiGe: H alloys grown by hot-wire chemical vapor deposition
Xu Y, et al.
Thin Solid Films, 430(1-2), 197-201 (2003)
Zhigang Chen et al.
Advanced materials (Deerfield Beach, Fla.), 25(14), 2095-2100 (2013-02-22)
A new photothermal coupling agent for photothermal ablation (PTA) therapy of tumors is developed based on ultrathin PEGylated W18O49 nanowires. After being injected with the nanowire solution, the in vivo tumors exhibit a rapid temperature rise to 50.0 ± 0.5
Karel Deprez et al.
Medical physics, 40(1), 012501-012501 (2013-01-10)
The construction of complex collimators with a high number of oblique pinholes is very labor intensive, expensive or is sometimes impossible with the current available techniques (drilling, milling or electric discharge machining). All these techniques are subtractive: one starts from

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