Volumetric study of (2-methoxyethanol+tetrahydrofuran+cyclohexane) at T=298.15K

The excess molar volumes VEm at T=298.15 have been determined in the whole composition domain for (2-methoxyethanol + tetrahydrofuran + cyclohexane) and for the parent binary mixtures. Data on VEm are also reported for (2-ethoxyethanol + cyclohexane). All binaries showed positive VEm values, small for (methoxyethanol + tetrahydrofuran) and large for the other ones. The ternary VEm surface is always positive and exhibits a smooth trend with a maximum corresponding to the binary (2-methoxyethanol + cyclohexane). The capabilities of various models of either predicting or reproducing the ternary data have been compared. The behaviour of VEm and of the excess apparent molar volume of the components is discussed in both binary and ternary mixtures. The results suggest that hydrogen bonding decreases with alcohol dilution and increases with the tetrahydrofuran content in the ternary solutions.