Measurements of density, viscosity, and refractive index in the T = (283.15 to 353.15) K temperature range at atmospheric pressure and vapor pressure over the P = (1.0 to 96.7, or 96.0, or 95.2, or 50) kPa pressure range for α-pinene, d-limonene, (±)-linalool, and citral, respectively, were made. The temperature dependence of these properties was fitted to empirical relations. The molar enthalpy of vaporization for these chemicals was calculated plotting the logarithm of the vapor pressure against the reciprocal temperature and using the Clausius−Clapeyron equation. The enantiomer ratios of α-pinene, d-limonene, and (±)-linalool were also obtained.

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Density and viscosity measurements for pure trichloromethane and 2-butanone as well as for trichloromethane (1) + 2-butanone (2) were made at (283.15, 293.15, 303.15, and 313.15) K over the whole concentration range. The experimental results were fitted to empirical equations, which permit the calculation of these properties in the whole concentration range and in the studied range of temperatures. The calculated values are in good agreement with the experimental ones. Data of the binary mixture were further used to calculate the excess molar volume and viscosity deviation. Vapor−liquid equilibrium (VLE) at T = 303.15 K for this binary system was also measured in order to calculate the activity coefficients and the excess molar Gibbs function. This binary system shows negative deviations from ideal behavior and forms a minimum pressure azeotrope at x 1 = 0.199 and p = 15.3 kPa. The excess or deviation properties were fitted by the Redlich−Kister polynomial relation to obtain their coefficients and standard deviations.

Density and viscosity measurements in the T = (273.15 to 318.15) K range of pure chloroform and methyl tert-butyl ether (MTBE), as well as of the binary system [x 1 chloroform + (1 − x 1) MTBE] over the whole concentration range at T = 293.15 K, were made. The experimental results for the pure components were fitted to empirical equations, which permit the calculation of these properties in the studied temperature range. Calculated values are in agreement with the experimental ones. Data of the binary mixture were further used to calculate the excess molar volume and viscosity deviations. The excess molar enthalpy at T = (303 ± 1) K and vapor−liquid equilibrium measurements at T = (303.15 ± 0.05) K were also measured for the binary system. These last experimental results were used to calculate activity coefficients, the excess molar Gibbs energy, and excess molar entropy. This binary system shows strong negative deviations from ideality and exhibits a minimum pressure azeotrope, whose coordinates are: P = (26.30 ± 0.05) kPa and x 1 = (0.586 ± 0.002). Excess or deviation properties were fitted to the Redlich−Kister polynomial relation to obtain their coefficients and standard deviations. The vapor pressure of pure MTBE over the P = [(20.00 to 97.20) ± 0.05] kPa range was also measured.

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