Ultrasonic velocity , Density and viscosity measurements have been used to calculate Isentropic Compressibility (βS) , Intermolecular free length (Lf) , Ultrasound velocity (V) , Density (ρ) , Excess Viscosity (η) , Shear?s Relaxation Time (τs) of solution of Di Methyl Phenyl Amine in aqueous organic solvent as Benzene . In each case ultrasound velocity increase and isentropic compressibility (βS) Decreases , Intermolecular free length (Lf) Decreases , Density (ρ) increase and viscosity increases with increases in molar concentration of Di Methyl Phenyl Amine. The Result has been interpreted in terms of ion-solvent interaction on the basis of acoustic properties.