The densities, viscosities, and dielectric constants of the acetonltrlle-toluene system were measured as a function of mole fraction at 15, 25, and 35 °C. The results are given as a power series equation, and the values of computed constants are given. Excess dielectric constant, molar polarization, excess molar polarization, and excess viscosity were calculated.
Viscosities and densities for propylene carbonate + toluene have been measured at 15,20,25,30, and 35 °C. The "interaction parameter" obtained from the Grundberg and Nissan equation, the deviation in viscosity ( ), and excess volume (Vs) are discussed.
Relative permittivities, , densities, F, refractive indices, n D , and ultrasonic velocities, u, were measured for the binary systems of γ-butyrolactone with methanol, ethanol, and 1-octanol at 298.15 K and with 1-butanol at 298.15 K and 303.15 K, over the entire composition range. From the experimental results, the excess volume, V E , and the deviations in relative permittivity, ∆ , ultrasonic velocity, ∆u, isentropic compressibility, ∆k s , and molar polarization, ∆P m , were calculated. The above functions show deviations from the additivity law, which depend on the length of the carbon chain of the alcohol.
The dielectric constants, viscosities, densities, and refractive indices of the binary solvent mixtures dimethylsulfoxide–isopropanol and propylene carbonate–isopropanol were measured at 25, 30, and 35 °C over the entire mole fraction range. Excess dielectric constant, excess molar polarization, and excess viscosity were calculated. For both binary systems the variation of the Kirkwood correlation factor has been examined. Keywords: propylene carbonate, acetonitrile, correlation factor, excess properties, dielectric constant.
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