Niobium(V) ethoxide

Synonym: Niobium ethanolate, Niobium ethylate, Niobium pentaethoxide, Pentaethoxyniobium, NbOEt

CAS Number 3236-82-6 | MDL Number MFCD00015122  | EC Number 221-795-2

NbOEt Chemical Structure

Product codeNB6826
CAS number3236-82-6
Assay (purity)98.5%+
Metal purity99.99+% – Nb
Purity methodby gravimetric assay: %Nb=28.3-30.5 (after ignition to oxide)
Molecular weight318.21 g/mol
Melting point6 °C (43° F)
Boiling point142 °C (288 °F) @ 5 mmHg
Flash point36 °C (97 °F) – closed cup
Appearanceyellow to gold liquid
Molecular formulaC10H25NbO5
Linear formulaNb(OCH2CH3)5
Packagingglassware/metal containers/bubblers

Niobium(V) ethoxide is used for the sol-gel processing of materials containing niobium oxides and mixed metal oxides. It is also used to prepare ferroelectric nanomaterials consisting of oxides of potassium, silicon, and niobium. See links below

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing NB6826 contact us at

Safety information

Hazardous class4.8(3)
Packing groupIII
Signal wordDANGER
Hazard statementsH226-H314-H318
Precautionary statementsP210-P231-P232-P233-P240-P241-P242-P243-P261-P264-P240-P241-P242-P243-P260-P264-P280-P301 + P330 + P331-P303 + P353 + P361-P304 + P340-P305 + P351 + P338-P310-P363-P370 + P378
Transport descriptionFlammable liquid, corrosive, n.o.s. (Niobium(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 Niobium(V) ethoxide below please contact customer support at

Lot# 019/256 Lot# 019/255 Lot# 019/308 Lot# 026/112 Lot# 015/886 Lot# 015/895

External identifiers for NbOEt

Pubchem CID160675
IUPAC Nameethanolate; niobium(5+)
InchI IdentifierInChI=1S/5C2H5O.Nb/c5*1-2-3;/h5*2H2,1H3;/q5*-1;+5

Known applications and external links

With Niobium(V) ethoxide oxide other customers often ask:

Ereztech synthesizes and sells additional NB-compounds.

To purchase NB6826 contact us at