TETRABUTYLAMMONIUM HYDROXIDE

PRODUCT IDENTIFICATION

CAS NO. 2052-49-5

TETRABUTYLAMMONIUM HYDROXIDE

EINECS NO. 281-792-7
FORMULA [CH3(CH2)3]4NOH
MOL WT. 259.47

H.S. CODE

 
SMILES

 

TOXICITY

Oral rat LD50: > 90 ml/kg
SYNONYMS Tetra-n-butylammonium Hydroxide; TBAH;
N,N,N-tributyl-1-Butanaminium, hydroxide;

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE clear liquid

MELTING POINT

 
BOILING POINT

 

SPECIFIC GRAVITY 0.830

SOLUBILITY IN WATER

soluble

pH

strong basic

AUTOIGNITION

 
VAPOR DENSITY  

NFPA RATINGS

Health: 3; Flammability: 0; Reactivity: 0

REFRACTIVE INDEX

 
FLASH POINT Not expected to be a fire hazard
STABILITY

Stable under ordinary conditions

GENERAL DESCRIPTION & 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
Quaternary ammonium hydroxides converted form salts with silver oxide, potassium hydroxide, or an ion-exchange resin are very strong bases. Tetrabutylammonium Hydroxide is used in organic synthesis as a phase transfer catalyst to enhance the reaction rate of a two-phase organic-water system , curing accelerators for epoxy resins and as an intermediate.
SALES SPECIFICATION

40% SOLUTION IN METHANOL

APPEARANCE

Clear liquid
ASSAY

38.0 - 42.0%

Br-

3.0% max

K+

2.0% max

MOISTURE

5.0% max

COLOR, APHA

100 max

TRANSPORTATION
PACKING 170kgs in drum
HAZARD CLASS 8 (Packing Group: II)
UN NO. 1719
OTHER INFORMATION
Hazard Symbols: C, Risk Phrases: 34, Safety Phrases: 25-36/37/39-45

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.
PRICES

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