EXCESS-ENTHALPIES FOR THE SYSTEMS O-XYLENE-PLUS-CYCLOHEXANOL-PLUS-NONANE AT 298.15-K AND 318.15-K AND 3-METHYLPHENOL-PLUS-1-HEXANOL-PLUS-HEPTANE AT 298.15-K AND FOR CONSTITUENT BINARIES

Excess enthalpies (H-E) were determined for two ternary systems, o-xyl ene + cyclohexanol + nonane and 3-methylphenol + 1-hexanol + heptane, and for their constituent binaries at 298.15 K and for the first terna ry system also at 318.15 K. The ternary H-E as a function of the compo sition was described by a new modification of the Redlich-Kister equat ion and presented in the form of isoenthalpic (H-E = const) curves.