Tetrabutylammonium bromide (TBAB) is a quaternary ammonium salt with a bromide counterion commonly used as a phase transfer catalyst.The anhydrous form is a white solid.
Tetrabutylammonium bromide (TBAB) is a quaternary ammonium compound. It is the most widely used phase transfer catalyst.Its interfacial properties have been studied in case of hydroxide initiated reactions. This may be applied in understanding the mechanism of phase transfer reactions