EXCESS-ENTHALPIES OF (N-HEPTANE OR N-DECANE) PLUS METHYL TERT-BUTYL ETHER PLUS DI-N-PROPYL ETHER TERNARY MIXTURES AT 298.15 K

Excess molar enthalpies, measured at 298.15 K in a flow microcalorimet er, are reported for the ternary mixtures (n-heptane + methyl tert-but yl ether + di-n-propyl ether) and (n-decane + methyl tert-butyl ether + di-n-propyl ether). Smooth representations of the results are descri bed and used to construct constant excess molar enthalpy contours on R oozeboom diagrams. It is shown that good estimates of the excess entha lpies of the ternary mixtures can be obtained from the Flory theory, u sing only the physical properties of the components and their binary m ixtures. (C) 1997 Elsevier Science B.V.