Densities ρ and excess molar volumes V E of the binary 1-propanol + chloroform and 1-propanol + benzene and ternary 1-propanol + chloroform + benzene mixtures have been determined. Experimental ρ measurements have been performed at six temperatures (288.15, 293.15, 298.15, 303.15, 308.15, and 313.15) K and atmospheric pressure with an Anton Paar DMA 5000 digital vibrating tube densimeter. Excess molar volumes V E were correlated by the Redlich−Kister (for binary data) and Nagata−Tamura (for ternary data) equations.