Abstract

Abstract—The density, viscosity and ultrasonic velocity of β- benzoyl propionic acid hasbeen determined for 2 MHz in different concentration ofethanol at 298K. Using values of density,ultrasonic velocity and viscosity the variousacoustic parameters for example , adiabatic compressibility (β_A),acoustic impedance (Z_s), intermolecular free length (L_F)have  been evaluated. The structure ofsynthesized molecules of β-Benzoyl propionic acid was confirmed by spectralanalysis. All these parameters have been used to study the molecularinteractions betweensolute and solvent molecules.

Keywords: Density, viscosity,ultrasonic velocity interferometer,β-Benzoyl propionic acid.