Skip to Content
Merck
CN
All Photos(2)

Documents

357421

Sigma-Aldrich

Tungsten

powder, ≤10 μm, ≥99.99% trace metals basis

Synonym(s):

W

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Empirical Formula (Hill Notation):
W
CAS Number:
7440-33-7
Molecular Weight:
183.84
EC Number:
231-143-9
MDL number:
MFCD00011461
UNSPSC Code:
12141747
PubChem Substance ID:
24861914
NACRES:
NA.23

Quality Level

100

Assay

≥99.99% trace metals basis

form

powder

resistivity

4.9 μΩ-cm, 20°C

particle size

≤10 μm

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

Related Categories

Pictograms

Flame
GHS02

Signal Word

Warning

Hazard Statements

H252

Hazard Classifications

Self-heat. 2

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

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

Visit the Document Library

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
Michael L Crichton et al.
Biomaterials, 34(8), 2087-2097 (2012-12-25)
The recent emergence of micro-devices for vaccine delivery into upper layers of the skin holds potential for increased immune responses using physical means to target abundant immune cell populations. A challenge in doing this has been a limited understanding of
Katrin Schröder et al.
Free radical biology & medicine, 41(9), 1353-1360 (2006-10-07)
Hyperlipidemia enhances xanthine oxidase (XO) activity. XO is an important source of reactive oxygen species (ROS). Since ROS are thought to promote atherosclerosis, we hypothesized that XO is involved in the development of atherosclerosis. ApoE(-/-) mice were fed a Western-type
Bing Sun et al.
Biosensors & bioelectronics, 44, 48-51 (2013-02-09)
A universal photoelectrochemical (PEC) sensing platform was fabricated based on the composition of protoporphyrin IX (PPIX), tungsten trioxide (WO3) and reduced graphene oxide (rGO) on indium tin oxide (ITO) electrode for detecting cysteine in aqueous solution. The rGO layer was
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
View All Related Papers

Articles

Additive Manufacturing of Permanent Magnets

Permanent magnets are an essential technology for energy conversion. Motors and generators are used to convert energy between electrical and mechanical forms.

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