Excess Molar Enthalpies for Ethanol + 2-Propanol + Methyl tert-Butyl Ether and 1-Propanol + 2-Propanol + Methyl tert-Butyl Ether at the Temperature of 298.15 K

Ternary excess molar enthalpies for the ethanol + 2-propanol + methyl tert-butyl ether (MTBE) and 1-propanol + 2-propanol + MTBE systems have been measured by a flow microcalorimeter at 298.15 K and ambient pressure. The pseudobinary excess molar enthalpies are positive over the whole range of composition. The ternary experimental results are correlated with a polynomial equation. The results have been compared with those calculated from a UNIQUAC associated-solution model taking into account the self-association of alcohols as well as the solvation between unlike alcohols and alcohols with MTBE using only binary parameters.