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339113

Sigma-Aldrich

Tantalum(V) ethoxide

99.98% trace metals basis

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Synonym(s):
Pentaethoxytantalum, Pentaethyl tantalate, Tantalum ethylate, Tantalum pentaethoxide, Tantalum(V) ethoxide
Linear Formula:
Ta(OC2H5)5
CAS Number:
Molecular Weight:
406.25
Beilstein/REAXYS Number:
3678999
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

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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1 of 4

This Item
521280760404383244
Tantalum(V) ethoxide 99.98% trace metals basis

339113

Tantalum(V) ethoxide

Tantalum(V) ethoxide packaged for use in deposition systems

760404

Tantalum(V) ethoxide

Tantalum(V) methoxide

383244

Tantalum(V) methoxide

assay

99.98% trace metals basis

assay

≥99.99% trace metals basis

assay

-

assay

-

density

1.566 g/mL at 25 °C (lit.)

density

1.252 g/mL at 25 °C (lit.)

density

1.566 g/mL at 25 °C (lit.)

density

-

mp

21 °C (lit.)

mp

-

mp

21 °C (lit.)

mp

-

impurities

<2 wt. % toluene

impurities

-

impurities

-

impurities

≤2% Cl

bp

155 °C/0.01 mmHg (lit.)

bp

-

bp

155 °C/0.01 mmHg (lit.)

bp

-

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

signalword

Warning

hcodes

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


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