71-91-0

Chinese nameTetraethylammonium bromide

English nameTetraethylammonium bromide

CAS71-91-0

EINECS Number200-769-4

Molecular formulaC8H20BrN

MDL NumberMFCD00011825

molecular weight210.16

Update date2026/03/17 18:51:29

71-91-0 structural formula

Basic Information

Chinese alias

Tetraethylammonium bromide
N,N,N-triethylethylammonium bromide Tetraethylammonium bromide
Tetraethylamine bromide
Tetraethylammonium bromide
Tetraethylammonium
bromide Tetraethylammonium
bromide
Tetraethylammonium bromide
Tetraethylammonium bromideEnglish aliases

TEAB
TEA BROMIDE
TETRAETHYLAMMONIUM BROMIDE
Ammonium, tetraethyl-, bromide
Beparon
Bromethyl
Bromure de tetraethylammonium
bromuredetetraethylammonium
Etambro
Etamon
Ethanaminium, N,N,N-triethyl-, bromide
Ethanaminium,N,N,N-triethyl-, bromide
Ethylon
Etylon
n,n,n-triethyl-ethanaminiubromide
Sympatektoman
Teamon
tetraethyl-ammoniubromide
Tetranium
Tetrylammonium BromideCategory

Surfactant: Quaternary ammonium salt type

Physicochemical properties

AppearanceWhite crystals. Hygroscopic. Easily soluble in water, ethanol, chloroform, and acetone; slightly soluble in benzene; water solubility: 2795 g/L (25°C). A 10% aqueous solution has a pH of 6.5, which remains unchanged after heating to 95°C for 28 hours. Irritating. Density: 1.397; Melting point: 285°C.

Melting point285 °C (dec.)(lit.)

boiling point>310 °C/979.1 hPa

density1,397 g/ ^cm³

vapor density5.3 (vs air)

vapor pressure<1 hPa

Refractive index1,442-1,444

Storage conditionsStore below +30°C.

solubilityAcetonitrile: 0.1 g/mL warm, clear, colorless

formliquid

colorWhite to cream

pH value6.5 (100g/l, H2O, 20℃)

OdorOdorless

pH range of color change of acid-base indicator6.5 at 100 g/l

Water solubility2795 g/L (25 ° C)

Sensitivityhygroscopic

Merck14,9199

Detection methodsT,NMR

BRN3563430

stabilityStable. Incompatible with strong oxidizing agents.

InChI1S/C8H20N.BrH/c1-5-9(6-2,7-3)8-4;/h5-8H2,1-4H3;1H/q+1;/p-1

InChIKeyHWCKGOZZJDHMNC-UHFFFAOYSA-M

SMILES[Br-].CC[N+](CC)(CC)CC

Security Data

Hazard Symbols (GHS)
GHS07

Warning wordswarn

Hazard descriptionH412

Prevention instructionsP273-P501

Dangerous goods signsXi

Hazard Category CodeR36/37/38

Safety InstructionsS26-S36-S37/39

WGK Germany3

RTECSBS5950000

F3

TSCAYes

Customs Code29239000

Storage Class11 – Combustible Solids

Hazard CategoryAquatic Chronic 3

Application areas

Application 1

Used as a polarographic analysis reagent and pesticide intermediateApplication 2

Used in ion-pair chromatography. For the detection of gold, iridium, palladium, rhodium, and ruthenium. Also used in polarographic analysis.

Preparation method

Method 1

In a 250 mL three-necked flask equipped with a reflux condenser and a stirrer, add 7 mL (5 g, 0.05 mol) of triethylamine, 4 mL (5.5 g, 0.05 mol) of bromoethane, and 20 mL of 1,2-dichloroethane or benzene. Reflux for 1.5–2 hours. After cooling the reaction solution, crystals precipitate, filter, wash twice with a small amount of 1,2-dichloroethane or benzene, dry, and store in a desiccator. Yield: 8–10 g.

Upstream and downstream product information

Upstream raw materials