Collect. Czech. Chem. Commun. 1993, 58, 2612-2624

Excess Volumes of Mixtures of Alkanols with Aromatic Hydrocarbons

Petr Munk, Anwei Qin and Dolly E. Hoffman

Department of Chemistry and Biochemistry and Center for Polymer Research, The University of Texas at Austin, Austin, Texas 78712, U.S.A.


The excess volumes of twenty binary mixtures of four aromatic hydrocarbons (benzene, toluene, ethylbenzene, and p-xylene) and five linear alkanols (methanol, ethanol, 1-propanol, 1-butanol, and 1-pentanol) at 20 °C are reported. The excess volume of systems with the same alkanol increases with increasing size and number of substituents on the benzene ring. For systems with the same aromatic hydrocarbon it increases with the length of the alkanols. The dependence of ∆V1ϑ2 values on composition is noticeably asymmetric. Systems with benzene as one of the component show larger ∆V1ϑ2 values than other systems and systems with methanol show different compositional dependence patterns.