Experimental results are reported at 298.15 K for excess molar volumes V E and excess molar enthalpies H E for binary mixtures of methanol, ethanol, 2-propanol, 1-butanol, and 2-butanol with diisopropyl ether (DIPE) and/or with dibutyl ether (DBE). A vibrating-tube densitometer was used to determine V E, and H E was measured using a quasi-isothermal flow calorimeter. The applicability of the extended real associated solution model has been investigated for describing the experimental excess properties presented as well as literature data of alkanol−ether mixtures containing DIPE and DBE.

Experimental data are reported at 298.15 K of excess molar volumes V E and of excess molar enthalpies H E for binary and ternary mixtures of an alkanol (1-propanol or 1-butanol), an ether (diisopropyl ether or dibutyl ether), and an alkane (heptane). A vibrating-tube densitometer was used to determine V E. H E was measured using a quasi-isothermal flow calorimeter. The experimental results are used to test the applicability of the modified UNIFAC model for correlating H E and of the ERAS model for describing both V E and H E of binary mixtures as well as for predicting the excess properties of ternary mixtures containing an alkanol, an ether, and an alkane. For all investigated binary systems, a better description of the experimental data was achieved with the ERAS model in comparison with the modified UNIFAC model.

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