Skip to Content
Merck
All Photos(1)

Key Documents

267554

Sigma-Aldrich

Tungsten

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

Synonym(s):

W

Sign Into View Organizational & Contract Pricing


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

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

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.
  • increase of the band gap of amorphous silicon germanium alloy.
  • formation of tungsten fibers for potential usage in the lighting industry.

Quantity

9.5 g = 10 m; 95 g = 100 m

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

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)
Tungsten fibre-reinforced composites for advanced plasma facing components
Neu R, et al.
Nuclear Materials and Energy, 12(1-2), 1308-1313 (2017)
Weijie Zhao et al.
ACS nano, 7(1), 791-797 (2012-12-22)
Geometrical confinement effect in exfoliated sheets of layered materials leads to significant evolution of energy dispersion in mono- to few-layer thickness regime. Molybdenum disulfide (MoS(2)) was recently found to exhibit indirect-to-direct gap transition when the thickness is reduced to a
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

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service