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

ABSTRACT

Henry's law constants and infinite dilution activity coefficients of propane, propene, butane, 2-methylpropane, 1-butene, 2-methylpropene, trans-2-butene, cis-2-butene, 1,3-butadiene, dimethyl ether, chloroethane, and 1,1-difluoroethane in 2-methylphenol, 3-methylphenol, and 4-methylphenol in the temperature range of (290 to 340) K were measured by a gas stripping method, and partial molar excess enthalpies and entropies were evaluated from the activity coefficients. A rigorous formula for evaluating the Henry s law constants from the gas stripping measurements was used for the data reduction of these highly volatile mixtures. The estimated accuracies are about 2 % for the Henry's law constants and 3 % for the infinite dilution activity coefficients. The Henry's law constants followed the order of increasing Henry s law constant with decreases in the normal boiling point temperature of the liquefied gas except for polar gases. The activity coefficients of the solutes in 2-methylphenol were smaller than those in 3-methylphenol and 4-methylphenol, and the activity coefficients of solutes in 3-methylphenol had similar values to those in 4-methylphenol.