The ternary mixture of salicilaldehyde with acetone in hexane has been studied extensively from the view point of their acoustic and molecular interaction studies at 293, 298, 303 and 308K. The variations in these parameters have been studied in terms of nature and extent of interaction. These properties have been used to calculate various thermo-chemical parameters. Experimental values are used to compute derived parameters. By using the Ultrasonic velocity (u), density (ρ) and coefficient of viscosity (η), the other acoustical parameters adiabatic compressibility (β), free length (Lf), interaction parameter (α), molar volume (Vm) were calculated. The study reveals that weak interaction takes place at higher temperatures of the ternary mixtures.