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Merck
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267511

Sigma-Aldrich

Tungsten

powder, 12 μm, 99.9% trace metals basis

Sinônimo(s):

W

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About This Item

Fórmula empírica (Notação de Hill):
W
Número CAS:
7440-33-7
Peso molecular:
183.84
Número CE:
231-143-9
Número MDL:
MFCD00011461
Código UNSPSC:
12141747
ID de substância PubChem:
24856230
NACRES:
NA.23

Ensaio

99.9% trace metals basis

forma

powder

resistividade

4.9 μΩ-cm, 20°C

tamanho de partícula

12 μm

pb

5660 °C (lit.)

pf

3410 °C (lit.)

densidade

19.3 g/mL at 25 °C (lit.)

cadeia de caracteres SMILES

[W]

InChI

1S/W

chave InChI

WFKWXMTUELFFGS-UHFFFAOYSA-N

Pictogramas

Flame
GHS02

Palavra indicadora

Warning

Frases de perigo

H252

Declarações de precaução

P235 - P280 - P403 + P235 - P407 - P420

Classificações de perigo

Self-heat. 2

Código de classe de armazenamento

4.2 - Pyrophoric and self-heating hazardous materials

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

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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
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
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.
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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