TETRAETHYL AMMONIUM BROMIDE

PRODUCT IDENTIFICATION

CAS NO. 71-91-0

TETRAETHYL AMMONIUM BROMIDE

EINECS NO. 200-769-4
FORMULA (C2H5)4NBr
MOL WT. 210.16

H.S. CODE

2923.90

TOXICITY

 
SYNONYMS TEAB; Tetrylammonium bromide;
Ethanaminium, N,N,N-triethyl-, bromide; Bromure de tetraethylammonium; TEA; Tetraethylammnonium bromide; ETAMBRO;
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE White to off white crystalline powder

MELTING POINT

285 - 287 C (Decomposes)
BOILING POINT

 

SPECIFIC GRAVITY 1.4

SOLUBILITY IN WATER

Very soluble

pH

6.5 (In solution)

AUTOIGNITION

 
VAPOR DENSITY 5.3

NFPA RATINGS

 

REFRACTIVE INDEX

 
FLASH POINT Not expected to be a fire hazard
STABILITY

Stable under ordinary conditions (Hygroscopic)

APPLICATIONS

Quaternary ammonium compounds are any of a group of ammonium salts in which organic radicals have been substituted for all four hydrogens of the original ammonium cation. They has a central nitrogen atom which is joined to four organic radicals and one acid radical. The organic radicals  may be alkyl, aryl, or aralkyl, and the nitrogen can be part of a ring system. They are prepared by treatment of an amine with an alkylating agent. They show a variety of physical, chemical, and biological properties and most compounds are soluble in water and strong electrolytes. In addition to their tendency of locating at the interface of two phases (liquid–liquid or solid–liquid) to introduces continuity between the two different phase, they have properties of disrupting micro-organisms' cell processes. These compounds are used as ;
  • Surface-active agents
  • Solvents
  • Intermediates
  • Active Ingredient for Conditioners
  • Antistatic Agent
  • Detergent Sanitisers
  • Softner for textiles and paper products
  • Phase Transfer Catalyst
  • Antimicrobials
  • Disinfection Agents And Sanitizers
  • Slimicidal Agents
  • Algaecide
  • Emulsifying Agents
  • Pigment Dispersers
SALES SPECIFICATION

POWDER

APPEARANCE

White to off white crystalline powder
ASSAY

99.0%

FREE AMINE

0.5% max

ASH

0.5% max

MOISTURE

0.5% max

50% SOLUTION

APPEARANCE

Clear to pale yellow   liquid
ASSAY

50.0% min

FREE AMINE

1.0% max

TRANSPORTATION
PACKING  
HAZARD CLASS Not regulated
UN NO.  

GENERAL DESCRIPTION OF PHASE TRANSFER CATALYSIS

'Phase transfer catalysis (PTC)' methodology is a powerful tool improving process efficiency, product selectivity and providing mild reaction conditions in organic chemical reactions. In many chemical reaction situations, there are different species (immiscible liquids or solid and liquid) which don't react each other due to separation by an interface. Small quantity of 'phase-transfer catalyst', involves a substrate (soluble in the organic layer) and an anionic reagent  or a nucleophile (dissolved in the aqueous layer), extracts one of the reactants, most commonly an anion, across the interface into the other phase where reaction can take place with the substrate and reaction can proceed. The quaternary ammonium salts can carry the nucleophile from the aqueous to organic phase and are used as the most commonly used as 'phase-transfer catalyst'. The phosphonium derivatives favoring higher thermal stability property are also used. Crown ethers and polyethylenglycol compounds are also widely used in this application.