Excess molar enthalpies of {x(1)CH(3)OH + x(2)CH(3)COOCH(3) + (1 - x(1) - x(2),)c-C6H12 and {x(1)CH(3)OH + x(2)CCl(4), + (1 - x(1) - x(2))c-C6H12}, measured with an isothermal dilution calorimeter at the temperature 298.15 K, are reported. The experimental values have been analyzed with a mole-fraction association model having binary and ternary parameters.