Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Excess enthalpies, densities, and speeds of sound at the temperatures (283.15, 298.15, and 313.15) K are reported for the binary mixtures a-pinene + ethanol and a-pinene + 1-propanol. Excess molar volumes, speed of sound deviations, isentropic compressibilities, and excess isentropic compressibilities have been calculated from the densities and speeds of sound. The excess isentropic compressibilities have been fitted to Redlich-Kister polynomials whereas the remaining excess properties and deviations of properties have been fitted to Pade' approximants. Excess properties are positive for both mixtures while speed of sound deviations show negative values. The values of these properties are discussed in terms of the molecular interactions. The enthalpic and volumetric behaviors of the mixtures are compared with those of the mixtures of a-pinene with ethanol and 1-propanol and of the mixtures of the butanols with cyclohexane.