Experimental results for the limiting activity coefficients in some binary and ternary mixtures of organic components

Experimental results for the activity coefficients at infinite dilution of 13 binary systems of either hexane or heptane or cyclohexane with 1-propanol or 2-propanol or 1-butanol and those compounds with either perfluorohexane or perfluoroheptane are reported for temperatures from 298 K to 343 K. Furthermore, experimental results for the activity coefficients of these perfluoroalkanes at infinite dilution in binary mixtures of one of those alkanes and one of those alcohols at 298 K are reported. Some of the new experimental results agree well with literature data. The new experimental data are also compared to predictions from several group contribution methods. The best predictions are achieved with a UNIFAC model with corrections for "free volume" contributions and with a modification of Kehiaian's method. The differences between predictions from those models and the new experimental data typically amount to about 10%.