Densities and Excess Molar Volumes of the Butan-1-ol + Cyclohexane + Benzene Ternary System within the Temperature Range (293.15–333.15) K and under Ambient Pressure

Experimental densities at temperatures (293.15, 298.15, 303.15, 313.15, 323.15, and 333.15) K and under ambient pressure conditions are reported for the first time for the ternary system (butan-1-ol + cyclohexane + benzene) covering the entire composition range. The corresponding binary subsystems (butan-1-ol + cyclohexane), (butan-1-ol + benzene), and (cyclohexane + benzene) have also been studied. The excess molar volumes, derived from experimental densities, were calculated and correlated by using Redlich–Kister and Cibulka equations for binary and ternary systems, respectively. Results have been discussed in terms of molecular interactions between the mixture's components and structural effects. The Jouyban-Acree model was used to represent the composition and temperature dependence of the densities of the studied binary and ternary mixtures. The accuracy of the Jouyban-Acree model was evaluated, and the absolute average percentage deviation between experimental and correlated densities was less than 0.06 and 0.08% for binary and ternary mixtures, respectively. Further, the ternary excess molar volumes are compared with the predicted values from binary contribution symmetric (Kohler and Muggianu) and asymmetric (Hillert and Toop) models. The asymmetric models outperformed the symmetric ones when butan-1-ol was chosen as the asymmetric component.