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Sigma-Aldrich

Tetraethylammonium hydroxide solution

~40% in H2O

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Synonym(s):
TEAOH solution, TEA hydroxide
Linear Formula:
(C2H5)4N(OH)
CAS Number:
77-98-5
Molecular Weight:
147.26
Beilstein:
3912961
MDL number:
MFCD00009024
UNSPSC Code:
12352100
PubChem Substance ID:
57653060
NACRES:
NA.22

form

liquid

Quality Level

100

concentration

~40% in H2O

impurities

≤0.1% halides (as chloride)

refractive index

n20/D 1.422

anion traces

sulfate (SO42-): ≤1000 mg/kg

SMILES string

[OH-].CC[N+](CC)(CC)CC

InChI

1S/C8H20N.H2O/c1-5-9(6-2,7-3)8-4;/h5-8H2,1-4H3;1H2/q+1;/p-1

InChI key

LRGJRHZIDJQFCL-UHFFFAOYSA-M

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Application

Tetraethylammonium hydroxide solution is widely used as a templating agent / structure-directing agent in the synthesis of ferric oxide nanorods, nanocrystalline yttrium oxide powder, silicoaluminophosphate (SAPO) molecular sieves and zeolites.

Caution

may form precipitate on storage, can be redissolved on heating to 40°C

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Chemistry of Materials, 19(19), 4776-4782 (2007)
Static hydrothermal crystallization of SUZ-4 zeolite in the presence of seed and tetraethylammonium hydroxide.
Zhou, Hualan and Wu, Yajing and Zhang, Wei and Wang, Jun
Materials Chemistry and Physics, 134(2-3), 651-656 (2012)
Synthesis and characterization of nanocrystalline yttrium oxide prepared with tetraalkylammonium hydroxides.
Fokema, Mark D et al.
Langmuir, 16(7), 3154-3159 (2000)
Methanol conversion on SAPO-34 catalysts prepared by mixed template method.
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