This paper reports densities, rho, refractive indices, n(D), excess molar volumes, V-E, and variation of refractive indices, Deltan(D), of (2-butanone, 3-pentanone, and 4-methyl-2-pentanone) + sunflower oil at temperatures from 283.15 K to 298.15 K. Speeds of sound, u, were measured, and isentropic compressibilities of the same mixtures were calculated at 298.15 K. Redlich-Kister polynomials were fitted to the results of excess volumes, variation of refractive indices, and variation of isentropic compressibilities with the mole fraction of ketone. All the systems showed slight deviations from ideality. The excess volumes increase with the number of carbon atoms of the ketone and increase with an increase of temperature. Experimental properties of the mixtures were compared with predicted values with several mixing rules. In all cases, deviations were found to be less than 4%.