Physico-chemical Studies of Isomeric Butanols in Aniline with m-Xylene

The values of sound velocity, density and viscosity have been measured at 303 K in the ternary systems of aniline + m-xylene + n, sec, tert and iso-butanols. From these data, acoustical parameters such as molar volume, adiabatic compressibility, free length, free volume and internal pressure have been estimated using the standard relations. The results are interpreted in terms of molecular interaction between the components of the mixtures. The presence of weak dipole-induced dipole interactions of larger magnitude is confirmed in the ternary systems. Of all the isomeric butanols, 1-ol, and especially 2-ol are found to be good structure makers that make the ternary complexes. In addition the possible interactions between the components are further confirmed by their excess values.