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 codeTA4846
CAS number6074-84-6
Assay (purity)98%+
Purity methodby gravimetric assay: %Ta=43.6-44.9 (after ignition to oxide)
Metal purity99.99%+-Ta
Molecular weight406.25
NMRconforms to structure
Formliquid
Appearanceyellow liquid or solid
Melting point21°C
Boiling point145°C/0.01 mm Hg(lit.)
Molecular formulaC10H25O5Ta
Liner formulaTa(OC2H5)5
Packagingglassware/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

UN2920
Hazardous class3(8)
Packing groupII
PictogramsGHS02GHS07
Signal wordWARNING
Hazard statementsH226-H315-H319-H335
Precautionary statementsP210-P233-P240-P241-P242-P243-P261-P264-P271-P280
Transport descriptionCORROSIVE LIQUID, FLAMMABLE, N.O.S. (TANTALUM(V) ETHOXIDE)
In TSCA registryYes

First Aid Measures

General adviceConsult a physician. Show this safety data sheet to the doctor in attendance. Move out of the dangerous area.
Eye contactRinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Skin contactWash off with soap and plenty of water. Consult a physician.
InhalationIf breathed in, move person into the fresh air. If not breathing, give artificial respiration. Consult a physician.
If swallowedDo 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# 031/349 Lot# 031/373

External identifiers for Pentaethoxytantalum

Pubchem CID2733710
SMILES[Ta+5].[O-]CC.[O-]CC.[O-]CC.[O-]CC.[O-]CC
IUPAC Nameethanol; tantalum
InchI IdentifierInChI=1S/5C2H5O.Ta/c5*1-2-3;/h5*2H2,1H3;/q5*-1;+5
InchI KeyHSXKFDGTKKAEHL-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