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339113

Sigma-Aldrich

Tantalum(V) ethoxide

99.98% trace metals basis

Synonym(s):

Pentaethoxytantalum, Pentaethyl tantalate, Tantalum ethylate, Tantalum pentaethoxide, Tantalum(V) ethoxide

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About This Item

Linear Formula:
Ta(OC2H5)5
CAS Number:
6074-84-6
Molecular Weight:
406.25
Beilstein/REAXYS Number:
3678999
MDL number:
MFCD00049785
UNSPSC Code:
12352103
PubChem Substance ID:
24860612
NACRES:
NA.23

Quality Level

100

assay

99.98% trace metals basis

form

liquid

reaction suitability

core: tantalum
reagent type: catalyst

impurities

<2 wt. % toluene

refractive index

n20/D 1.487 (lit.)

bp

155 °C/0.01 mmHg (lit.)

mp

21 °C (lit.)

density

1.566 g/mL at 25 °C (lit.)

SMILES string

CCO[Ta](OCC)(OCC)(OCC)OCC

InChI

1S/5C2H5O.Ta/c5*1-2-3;/h5*2H2,1H3;/q5*-1;+5

InChI key

HSXKFDGTKKAEHL-UHFFFAOYSA-N

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General description

Tantalum(V) ethoxide Ta(OC2H5)5 is a tantalum alkoxide that can be used as a precursor in the preparation of tantalum oxide by chemical vapor deposition (CVD). It has excellent volatility and thermal stability. It can be synthesized by anodic oxidation of tantalum plate in anhydrous ethanol.

Application

Ta(OC2H5)5 can be used in the formation of ultrathin tantalum oxide based capacitors. It can also be used as a liquid precursor in the preparation of tantalum carbide nanopowder for hard coating on metal surfaces.

pictograms

Flame
GHS02

signalword

Warning

hcodes

H226

Hazard Classifications

Flam. Liq. 3

Storage Class

3 - Flammable liquids

wgk_germany

WGK 1

flash_point_f

84.2 °F - closed cup

flash_point_c

29 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Certificates of Analysis (COA)

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Leakage currents in amorphous Ta 2 O 5 thin films
Chiu F, et al.
Journal of Applied Physics, 81(10), 6911-6915 (1997)
The Electrosynthesis of Tantalum Ethoxide
Yang H, et al.
Electrochemistry, 82(9), 743-748 (2014)
Ultrathin tantalum oxide capacitor dielectric layers fabricated using rapid thermal nitridation prior to low pressure chemical vapor deposition
Kamiyama S, et al.
Journal of the Electrochemical Society, 140(6), 1617-1625 (1993)
Controlling the synthesis of TaC nanopowders by injecting liquid precursor into RF induction plasma
Ishigaki T, et al.
Science and Technology of Advanced Materials, 6(2), 111-111 (2005)
Maria-Joao Ribeiro et al.
EJNMMI research, 4, 28-28 (2014-07-10)
Cerebral stroke is a severe and frequent condition that requires rapid and reliable diagnosis. If administered shortly after the first symptoms manifest themselves, IV thrombolysis has been shown to increase the functional prognosis by restoring brain reperfusion. However, a better
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