Excess molar enthalpies of ternary mixtures of n-heptane, methyl 1,1-dimethylpropyl ether and 1,2-dimethoxyethane

Excess molar enthalpies, measured at 298.15 K in a flow microcalorimeter, a re reported for x(1)CH(3)(CH2)(5)CH3+x(2)C(2)H(5)C(CH3)(2)OCH3+x(3)CH(3)O(C H2)(2)OCH3. Smooth representations of the results are presented and used to construct constant excess molar enthalpy contours on a Roozeboom diagram. It is shown that good estimates of the ternary enthalpies can be obtained f rom the Flory theory, using only the physical properties of the components and their binary mixtures. (C) 1998 Elsevier Science B.V. All rights reserv ed.