The densities, speeds of sound, viscosities, and relative permittivities for the binary mixtures of 1-propanol + and 1-butanol + heptane at 298.15 K and 308.15 K are reported. The excess volumes V E, isentropic compressibilities , viscosity deviations, δη, relative permittivity deviations δε, and molar polarization deviations, δP m were calculated from the experimental results.

New experimental data on densities, viscosities, and relative permittivities for pentane + methanol, + 1-propanol, + 1-butanol, + 1-pentanol, + 1-hexanol, + 1-heptanol, + 1-octanol, + 1-decanol, and + 1-dodecanol are reported at 298.15 K. The molar and orientation polarizations were obtained by combining relative permittivity and molar volume data. The excess volumes and deviations in relative permittivities and molar and orientation polarizations were also calculated. The viscosities of all the mixtures were also correlated by Grunberg−Nissan, McAllister, and Auslander equations. The correlation factor, g K, was derived from the relative permittivity data over the whole 1-alcohol mole fraction range for all the mixtures.

Densities and viscosities for heptane + 1-pentanol, +1-hexanol, +1-heptanol, +1-octanol, +1-decanol, and +1-dodecanol are reported at (298.15 K and 308.15) K. The viscosity deviations were calculated. The mixture viscosity data were fitted to the semiempirical equations of Grunberg−Nissan, Heric, McAllister, and Auslander.

New experimental data on dielectric constants, refractive indexes for the binary mixtures of heptane + 1‐pentanol, + 1‐hexanol, + 1‐heptanol, + 1‐octanol, 1‐decanol and + 1‐dodecanol at 298.15 and 308.15 K are reported. The molar and orientation polarizations were calculated for the pure and mixture components. The excess dielectric functions were estimated. The variation of correlation factor and free energy of mixing has been examined over the whole range of 1‐alcohol mole fractions for all the binary mixtures. The results are interpreted in terms of molecular interactions.

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