Mixing properties of benzene+2-methyl-2-butanol+1-pentanol at 298.15 K. Experimental results and comparison between ERAS model and cubic EOS estimations for excess molar volumes

Excess molar volumes, changes of refractive indices, and changes of isentro pic compressibilities of the ternary mixture benzene + 2-methyl-2-butanol 1-pentanol, and the binary subsystem 2-methyl-2-butanol + 1-pentanol have been calculated from density, refractive index, and speed of sound measurem ents at 298.15 K and atmospheric pressure. The Redlich-Kister and the Cibul ka equation were used for correlating binary and ternary properties, respec tively. ERAS model interaction parameters of the binary systems concerned w ere computed. A good representation of the behaviour of the property is obt ained. The Soave-Redlich-Kwong and the Peng-Robinson equations of state wer e applied, in combination with simple mixing rules, Binary parameters were calculated from experimental excess molar volumes, and used to predict the ternary property, yielding lower deviations. (C) 2000 Elsevier Science B.V, All rights reserved.