Tetramethylammonium tribromide Chemical Properties

Melting point:

115-118 °C

solubility 

slightly sol H2O, alcohols, other organic solvents; slowly dissolves in acetone, reacting to form a lachrymatory solution.

form 

powder

color 

orange

Sensitive 

Hygroscopic

BRN 

3914655

CAS DataBase Reference

15625-56-6

EPA Substance Registry System

Methanaminium, N,N,N-trimethyl-, (tribromide) (15625-56-6)

Safety Information

Hazard Codes 

C

Risk Statements 

34-37

Safety Statements 

26-36/37/39-45

RIDADR 

UN 3263 8/PG 3

WGK Germany 

3

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

Tetramethylammonium tribromide Usage And Synthesis

Preparation

Tetraalkylammonium salts that have poor stability can be freshly prepared by the procedure in eq 1. Stoichiometric amounts of tetraalkylammonium (methyl, ethyl, butyl…) bromide and sodium bromide are dissolved into hot water (1 L/mol of sodium bromide) and concd nitric acid (2.2 mol/mol NaBr) is slowly added with stirring. The reaction starts after few min and can be quite exothermic. When the temperature of the mixture returns to rt, the orange precipitate is filtered, washed with ethanol and ether, and dried.

storage

Tetramethylammonium tribromide is a hygroscopic solid and should be stored under dry conditions. Purity more than 98%; stable bromine degree (1 g = 3.18 mequiv Br2) when correctly handled. Avoid washing reaction vessels with acetone. Less toxic than bromine, but handle in a fume hood.

Tetramethylammonium tribromide(15625-56-6)Related Product Information

• Tetraoctylammonium bromide
• Tetrabutylammonium bromide
• Tetramethylammonium hydroxide
• Ammonium bromide
• Tetrapropylammonium bromide
• Tetraheptylammonium bromide
• Tetraethylammonium bromide
• Tetramethylammonium hydroxide pentahydrate
• FERROUS SULFATE
• Tetramethylammonium bromide
• Phenyltrimethylammonium tribromide
• Bromine
• Benzyltrimethylammonium tribromide
• Tetrabutylammonium tribromide
• Tetramethylammonium tribromide
• Tetramethylammonium nitrate
• TETRAMETHYL-1,3-CYCLOBUTANEDIONE
• TETRAMETHYLAMMONIUM PERCHLORATE