DIELECTRIC STUDIES ON BINARY-MIXTURES OF METHYL ISOBUTYL KETONE (MIBK) IN NONPOLAR-SOLVENTS

Dielectric constants of binary mixtures of methyl isobutyl ketone (MIB K), an extractant used in nuclear industry, with non-polar solvents, v iz., benzene, CCl4 and p-xylene have been measured at 303 K. The resul ts are used to compute linear correlation factor, excess molar polariz ation and excess free energy of mixing in these mixtures using the Win kelmann-Quitzsch equation to interpret the liquid structure. The trend of variation of these factors indicates gradual conversion of alpha-m ultimers to beta-multimers on adding a non-polar diluent to MIBK.