New data on densities, speeds of sound, viscosities, dielectric constants, and refractive indices for the mixtures of 1-heptanol + hexane and + heptane at 303.15 and 313.15 K are reported. The excess volumes, V-E, and excess isentropic compressibilities, K-s(E), viscosity deviations, delta eta, dielectric constant deviations, delta epsilon, and molar and orientation polarization deviations, delta P-m and delta P-o, were calculated from the experimental data. The experimental speeds of sound have been analyzed in terms of free length theory (FLT) and collision factor theory (CFT). The experimental viscosities were also fitted to Grunberg-Nissan, McAllister, and Auslander equations.