Tetrabutylammonium bromide

Details:

TETRA BUTYL AMMONIUM BROMIDE Product Name Tetra Butyl Ammonium Bromide (TBAB) CAS # : 1643-19-2 Empirical Formula : C16H36N Br M.W. : 322 Appearance : White Crystalline Powder Assay : 99 % Min Melting Range : 100° C - 104° C Water Content / Moisture : 0.5 % Max Free Amines & Amines Salt : 0.5 % Max Solubility : Soluble In Water – Hydroscopic Material '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.