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Tetraethylammonium bromide

Basic information Safety Supplier Related

Tetraethylammonium bromide Basic information

Product Name:
Tetraethylammonium bromide
Synonyms:
  • TETRAETHYLAMMONIUM BROMIDE
  • TEAB
  • TEA BROMIDE
  • Ammonium, tetraethyl-, bromide
  • Beparon
  • Bromethyl
  • Bromure de tetraethylammonium
  • tmd10
CAS:
71-91-0
MF:
C8H20BrN
MW:
210.16
EINECS:
200-769-4
Product Categories:
  • Ammonium Salts
  • Greener Alternatives: Catalysis
  • Ammonium Bromides (Quaternary)
  • Quaternary Ammonium Compounds
  • Phase Transfer Catalysts
  • Ion-pair Reagents
  • quarternary ammonium salts
  • Pharmaceutical intermediates
  • surfactant
  • bc0001
Mol File:
71-91-0.mol
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Tetraethylammonium bromide Chemical Properties

Melting point:
285 °C (dec.)(lit.)
Density 
1,397 g/cm3
vapor density 
5.3 (vs air)
refractive index 
1,442-1,444
storage temp. 
Store below +30°C.
solubility 
acetonitrile: 0.1 g/mL warm, clear, colorless
form 
Liquid
color 
White to cream
Odor
Odorless
PH Range
6.5 at 100 g/l
PH
6.5 (100g/l, H2O, 20℃)
Water Solubility 
2795 g/L (25 º C)
Sensitive 
Hygroscopic
Merck 
14,9199
BRN 
3563430
Stability:
Stable. Incompatible with strong oxidizing agents.
InChIKey
HWCKGOZZJDHMNC-UHFFFAOYSA-M
CAS DataBase Reference
71-91-0(CAS DataBase Reference)
NIST Chemistry Reference
Tetraethylammonium bromide(71-91-0)
EPA Substance Registry System
Ethanaminium, N,N,N-triethyl-, bromide (71-91-0)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-37/39
WGK Germany 
3
RTECS 
BS5950000
3
TSCA 
Yes
HS Code 
29239000

MSDS

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Tetraethylammonium bromide Usage And Synthesis

Chemical Properties

white to light yellow crystalline solid

Uses

Tetraethylammonium Bromide, can be used as a source of tetraethylammonium ions for various pharmaceutical studies. It has also the ability to block K+ channels in various tissues.

Uses

  • Tetraethylammonium bromide (TEAB) catalyzes the synthesis of thioesters by the oxidative coupling of aldehydes or alcohols with thiols or disulfides.
  • It is used as a catalyst, along with o-iodoxybenzoic acid (IBX), in the oxidation of sulfides to sulfoxides and primary carboxamides to one-carbon dehomologated nitriles.
  • TEAB can also be used as an organic template to synthesize zeolite beta.

General Description

The use of ion-pairing reagents as mobile phase additives allows the separation of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is of utmost importance to their successful application. Sigma-Aldrich offers an outstanding range of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) determination. All mobile phase additives are subject to rigorous testing with special emphasis on the requirements of modern reversed phase HPLC:

Purification Methods

Recrystallise the bromide from EtOH, CHCl3 or diethyl ether, or recrystallise it from acetonitrile and dry it over P2O5 under reduced pressure for several days. It also recrystallises from EtOH/diethyl ether (1:2), EtOAc, water or boiling MeOH/acetone (1:3) or by adding an equal volume of acetone and allowing to cool. Dry it at 100o in vacuo for 12 days, and store over P2O5. [Beilstein 4 IV 332.]

Tetraethylammonium bromide Preparation Products And Raw materials

Raw materials

Preparation Products

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