This paper reports experimental densities, surface tensions, and refractive indexes of the ternary system (propyl propanoate + hexane + m-xylene) at the temperature 298.15 K and atmospheric pressure over the whole composition range. Also, the corresponding binary mixtures not published before are presented. The excess molar volumes, surface tension deviations, and changes in the refractive index on mixing have been calculated. Finally, we will compare the experimental data of surface tension and refractive index with different theoretical and empirical approximations.