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Merck
CN

267511

Tungsten

powder, 12 μm, 99.9% trace metals basis

Synonym(s):

W

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About This Item

Empirical Formula (Hill Notation):
W
CAS Number:
7440-33-7
Molecular Weight:
183.84
NACRES:
NA.23
PubChem Substance ID:
24856230
UNSPSC Code:
12141747
EC Number:
231-143-9
MDL number:
MFCD00011461

Key Documents

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Product Name

Tungsten, powder, 12 μm, 99.9% trace metals basis

InChI key

WFKWXMTUELFFGS-UHFFFAOYSA-N

InChI

1S/W

SMILES string

[W]

assay

99.9% trace metals basis

form

powder

resistivity

4.9 μΩ-cm, 20°C

particle size

12 μm

bp

5660 °C (lit.)

mp

3410 °C (lit.)

density

19.3 g/mL at 25 °C (lit.)

Quality Level

100

Related Categories

pictograms

Flame
GHS02

signalword

Warning

hcodes

H252

Hazard Classifications

Self-heat. 2

Storage Class

4.2 - Pyrophoric and self-heating hazardous materials

wgk

WGK 3

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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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ8614
MKCZ2472
MKCV8289
MKCS9848
MKCV2059

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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
Denys Shevchenko et al.
Dalton transactions (Cambridge, England : 2003), 42(14), 5130-5139 (2013-02-14)
A rare example of a "monomeric" triple transition-metal substituted Keggin anion has been synthesized and characterized by various methods including X-ray crystallography, ESI and MALDI mass spectrometry, electrochemistry, EPR, and SQUID.
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
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
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