Tantalum(V) ethoxide 

Synonym: Tantalum ethylate, Pentaethoxytantalum, Tantalum(5+) pentaethanolate, Tantalum(5+) ethanolate, Ta(OEt)5

CAS Number 6074 -84-6 | MDL Number MFCD00049785 | EC Number 228-010-2

Tantalum(V) ethoxide Chemical Structure

Product code TA4846
CAS number 6074-84-6
Assay (purity) 98%+
Purity method by gravimetric assay: %Ta=43.6-44.9 (after ignition to oxide)
Metal purity 99.99%+-Ta
Molecular weight 406.25
NMR conforms to structure
Form liquid
Appearance yellow liquid or solid
Melting point 21°C
Boiling point 145°C/0.01 mm Hg(lit.)
Molecular formula C10H25O5Ta
Liner formula Ta(OC2H5)5
Packaging glassware/metal containers/bubblers

Tantalum(V) ethoxide is mainly used for the manufacture of Tantalum(V) oxide thin-film materials. These materials are applied in semiconductor, electrochromic, and optical industries. These films have a variety of usages. For example, as optical films with refractive indices as high as 2.039. Chemical vapor deposition allows control of the thickness of the film on a nanometre scale. Mixed-metal thin-films have also been prepared from this compound. A research application of Ta(OEt)5 is for the synthesis of novel compounds with unusual chemical or geometric properties. Synthesis of this product is often mentioned in the literature (see the links below).

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules and bottles or metal ampules and bubblers are available for packaging. For additional information or details about purchasing TA4846 contact us at sales@ereztech.com

Safety information

UN 1993
Hazardous class 3
Packing group III
Pictograms GHS02GHS07
Signal word WARNING
Hazard statements H226-H315-H319-H335
Precautionary statements P210-P233-P240-P241-P242-P243-P261-P264-P271-P280
Transport description FLAMMABLE LIQUID, N.O.S. (Tantalum(V) ethoxide)
In TSCA registry Yes

First Aid Measures

General advice Consult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area.
Eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contact Wash off with soap and plenty of water. Consult a physician.
Inhalation If breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowed Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

Certificates of Analysis (CoA)

If you don’t see the needed lot of Tantalum(V) ethoxide below please contact customer support at sales@ereztech.

 Lot# 10130 Lot# 10200 Lot# 12030 Lot# 013/011 Lot# 015/834 Lot# 031/410 Lot# 031/420 Lot# 019/314 Lot# 01121 Lot# 03241 Lot# 05251

External identifiers for Pentaethoxytantalum

Pubchem CID 2733710
SMILES [Ta+5].[O-]CC.[O-]CC.[O-]CC.[O-]CC.[O-]CC
IUPAC Name ethanol; tantalum
InchI Identifier InChI=1S/5C2H5O.Ta/c5*1-2-3;/h5*2H2,1H3;/q5*-1;+5
InchI Key HSXKFDGTKKAEHL-UHFFFAOYSA-N

Known applications and external links

With Tantalum(V) ethoxide other customers often ask:

Ereztech synthesizes and sells additional Ta-compounds.

To purchase TA4846 contact us at sales@ereztech.com