EXCESS-ENTHALPIES OF 1-BUTANOL-2-BUTANOL-N-HEPTANE, 1-HEXANOL-CYCLOHEXANOL-N-NONANE, 2-BUTANOL-N-HEPTANE, 1-HEXANOL-CYCLOHEXANOL AND CYCLOHEXANOL-N-NONANE AT 298.15 K

Excess enthalpies for two ternary systems (1-butanol-2-butanol-n-hepta ne and 1-hexanol-cyclohexanol-n-nonane) and three binary systems (2-bu tanol-n-heptane, 1-hexanol-cyclohexanol and cyclohexanol-n-nonane) at 298.15 K have been measured with a Calvet-type microcalorimeter. The R edlich-Kister equation and the UNIFAC(3Q), a version of UNIFAC, fitted to binary H-E data, have been applied in predicting ternary excess en thalpies. New group interaction parameters of this version have been d etermined.