Ultrasonic Speed Measurements in Binary Mixtures Containing Esters at Temperatures from 303.15 to 318.15 K

Density and ultrasonic speed have been measured in pure and binary mixtures containing o-anisidine and butyl acetate or propyl acetate over the whole composition range at 303.15, 308.15, 313.15 and 318.15 K. From these values, isentropic compressibility and intermolecular free lengths as well as excess quantities for sound speed, isentropic compressibility and intermolecular free length have been calculated. The results have been fitted to Redlich-Kister polynomial equation. The results have been explained on the basis of intermolecular interactions.