LAUSR

Abstract As an extension of our previous work, thermodynamic and acoustic properties of binary mixtures of benzyl alcohol with propyl amine, di-propyl amine, diiso-propyl amine and tri-propyl amine have been investigated by measuring density and speed of sound data at four temperatures (T = 303.15, 308.15, 313.15 and 318.15 K) and pressure (P = 0.1 MPa) over the entire composition range. These data have been utilized to calculate excess parameters like excess molar volume (VmE), excess isentropic compression (KSE ) and excess speed of sound (uE) for all the systems.All the excess parameters have been correlated by Redlich-Kister equation. Further, to analyse the experimental results theoretical treatment of the data has also been done by using Prigogine–Flory–Patterson (PFP) theory, intermolecular free length theory and collision frequency theory. Results were also supported by FTIR studies of equimolar binary liquid mixtures.