Excess volumes of binary systems formed by a 2,4,6-trimethylpyridine and n-alkane

As an extension of our investigation of the effect of chain length of an n-alkane, as well as the number and position of methyl groups in a pyridine ring, excess molar volumes, VE, for a 2,4,6-trimethylpyridine + a C6 to C10 n-alkane have been measured at 25 °C. For these systems no VE values were available in the literature. We have compared the experimental VE data for the investigated systems with the results calculated by applying the Prigogine-Flory-Patterson theory (PFP) (Flory et al., 1964, 1982), Extended real associated solutions by Heintz (1985) (ERAS), and Treszczanowicz-Benson-Patterson (TB), (Treszczanowicz et al., 1989). We concluded that Treszczanowicz-Benson-Patterson Method (Treszczanowicz et al., 1989) gave the best results of VE.