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262846

Sigma-Aldrich

Tantalum

powder, −325 mesh, 99.9% trace metals basis

Synonym(s):

Ta

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About This Item

Empirical Formula (Hill Notation):
Ta
CAS Number:
7440-25-7
Molecular Weight:
180.95
MDL number:
MFCD00011252
UNSPSC Code:
12141741
PubChem Substance ID:
24855929
NACRES:
NA.23

vapor pressure

<0.01 mmHg ( 537.2 °C)

Assay

99.9% trace metals basis

form

powder

autoignition temp.

572 °F

resistivity

13.5 μΩ-cm, 20°C

particle size

−325 mesh

bp

5425 °C (lit.)

mp

2996 °C (lit.)

density

16.69 g/cm3 (lit.)

SMILES string

[Ta]

InChI

1S/Ta

InChI key

GUVRBAGPIYLISA-UHFFFAOYSA-N

Application

Employed in the synthesis of metal-rich layered tellurides, TaNi2Te2 and TaCo2Te2, which possess ideal characteristics for photovoltaic applications, for surface scanning studies, and which may give clean and atomically flat surfaces. Starting material for new edge-bridged octahedral M6 cluster compounds such as CsErTa6Cl18, for which electron and stability studies were performed.

Pictograms

Flame
GHS02

Signal Word

Danger

Hazard Statements

H228

Hazard Classifications

Flam. Sol. 1

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ3898
MKCQ0978
MKCP3633
MKCL9792
MKCF1641

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Neuhasen, J. et al.
Chemistry of Materials, 10, 3870-3870 (1998)
Ogliaro, F. et al.
Inorganic Chemistry, 37, 6199-6199 (1998)
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