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)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36-37/39

WGK Germany 

3

RTECS 

BS5950000

F 

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(71-91-0)Related Product Information

• Clidinium bromide
• Ethidium bromide
• Tetraoctylammonium bromide
• Tetrabutylammonium bromide
• Tetrapropylammonium bromide
• Ammonium bromide
• Tetraethylammonium Chloride
• Sodium bromate
• Benzyltriethylammonium chloride
• Tetraethylammonium hydroxide
• 4,4'-Bis(diethylamino) benzophenone
• Tetrabutylphosphonium bromide
• TETRAETHYLPHOSPHONIUM BROMIDE
• Tetraethylene glycol dimethyl ether
• Tetraethylammonium tetrafluoroborate
• Tetraethylammonium acetate
• TETRAETHYLAMMONIUM FLUORIDE DIHYDRATE
• Tetrabutylammonium azide