The density, ultrasonic velocity, and viscosity of binary mixtures of (anisaldehyde + o-cresol. or + m-cresol, or + p-cresol) have been measured over the entire range of composition at T = (303.15, 308.15, 313.15, and 318.15) K. Using these data, various thermo-acoustic parameters such as deviation in adiabatic compressibility. Delta beta, excess molar volume, V(E), viscosity deviation, Delta eta and excess Gibbs free energy of activation for viscous flow. Delta G(E) have been calculated. The calculated deviation and excess functions have been fitted to the Redlich-Kister polynomial equation. The negative and positive values of deviation or excess thermo-acoustic parameters observed have been explained on the basis of the intermolecular interactions present in these mixtures. (C) 2011 Elsevier Ltd. All rights reserved.