86631

Tetraethylammonium hydroxide solution

~25% in methanol (~1.5 M)

• Synonym(s): 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: 57653059
• NACRES: NA.22

Properties

• form: liquid
• Quality Level: 100
• concentration: ~25% in methanol (~1.5 M)
• anion traces: sulfate (SO₄^2-): ≤1000 mg/kg
• functional group: amine
• 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

Description

General description

Tetraethylammonium hydroxide (TEAOH) is a quaternary ammonium salt that is commonly used as a strong base and phase-transfer catalyst in organic synthesis.

Application

Tetraethylammonium hydroxide (25% in methanol) can be used as a base in the synthesis of 2-hydroxyacetophenoxime from 2-hydroxysalicylaldoxime and hydroxylamine hydrochloride. It is also used as an organic structure-directing agent in the synthesis of zeolites such as Beta, ZSM-20, and SAPO-34.

Safety Information

• Pictograms: GHS02,GHS06,GHS08,GHS05
• Signal Word: Danger
• Hazard Statements: H225,H301 + H311 + H331,H314,H370
• Precautionary Statements: P210 - P233 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - STOT SE 1
• Target Organs: Eyes,Central nervous system
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 3
• Flash Point(F): 49.5 °F
• Flash Point(C): 9.7 °C
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves