Studies of physical properties on molecular interactions in binary liquid mixtures of 3-chloroaniline with isomeric butanols at different temperatures

The thermophysical parameters, viz. excess molar volume (VE), viscosity (η), speed of sound (u) and spectroscopic parameter (FTIR) have been measured for binary mixtures of 3-chloroaniline with isomeric butanols (1-butanol, 2-butanol and 2-methyl-2-propanol) over the entire range of mole fraction at 303.15, 308.15, 313.15 K and 318.15 K. The excess isentropic compressibility, deviation in excess viscosity and excess Gibbs energy of activation of viscous flow have also been estimated and analyzed. The spectroscopic measurement confirms that the interaction between unlike molecules takes place through hydroxyl groups of isomeric butanols. A good agreement is obtained between excess quantities and spectroscopic data.