Speeds of sound, densities and viscosities of the binary mixture of Benzyl benzoate with mole fractions of amides -Formamide (FA), N-Methyl formamide (NMF) and Di methyl formamide (DMF) have been estimated utilizing the standard strategies at 303.15, 308.15 and 313.15K. From these deliberate values, different thermo-dynamic parameters such as isentropic compressibility (K s ), intermolecular free length (L f ), molar volume (V m ), Gibbs free energy (∆G), enthalpy (H) and their excess properties were determined. The figured qualities have been fitted to the Redlich-Kister type polynomial condition utilizing least squares technique to assess the twofold coefficients and standard deviations.