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545007

Sigma-Aldrich

Tantalum

Synonym(s):

Ta

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About This Item

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

Pricing and availability is not currently available.

vapor pressure

<0.01 mmHg ( 537.2 °C)

Quality Level

autoignition temp.

572 °F

resistivity

13.5 μΩ-cm, 20°C

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

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Application

Tantalum powder, a semiconducting material, is used as a photocatalyst and shows high efficiency in the solar splitting of water.[1] Its biocompatibility makes it useful in the development of medical devices and implants.[2][3]

Pictograms

Flame

Signal Word

Danger

Hazard Statements

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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    Tantalum-based semiconductors for solar water splitting
    Zhang P, et al.
    Chemical Society Reviews, 43(13), 4395-4422 (2014)
    Hany A El-Sayed et al.
    Nanoscale, 5(4), 1494-1498 (2013-01-23)
    Ta oxide nanotubes (NTs) were formed by the anodization of Ta at 15 V in a solution of concentrated sulfuric acid containing 0.8-1.0 M hydrofluoric acid. To study the initial stages of NT formation, FESEM images of samples anodized for
    Orbital ultrasound in the selective screening of a dural-cavernous sinus fistula.
    Hamid Shokoohi et al.
    European journal of emergency medicine : official journal of the European Society for Emergency Medicine, 20(2), 137-139 (2013-02-26)
    S Nag et al.
    Journal of the mechanical behavior of biomedical materials, 16, 21-28 (2012-11-10)
    Microstructure and mechanical properties of laser deposited complex quaternary Ti-34Nb-7Zr-7Ta (all wt%), an orthopedic load-bearing implant alloy, has been investigated in detail in both as-deposited as well as heat-treated (β-solutionized and quenched) conditions. The difference in stress-strain behavior of this
    Thomas Larzon et al.
    Vascular, 21(2), 87-91 (2013-03-20)
    Control of back bleeding from the hypogastric artery into the aneurysm after endovascular aneurysm repair (EVAR) of a ruptured aorto-iliac aneurysm may be necessary in order to avoid a type II endoleak. It is an emergency situation and selective catheterization

    Articles

    An article concerning self-propagating reactions induced by mechanical alloying, presented by Sigma-Aldrich.com.

    Biomedical implants are essentially foreign substances within the human body that must survive many years’ exposure to demanding mechanical and physiological conditions. Despite these challenges, metal implants have been widely used to substitute for or rebuild hard tissues such as bones and teeth.

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