Volumetric, acoustic and optical properties of binary mixtures of 2-propanol with n-alkanes (C6-C10) from 293.15 K to 303.15 K

Densities, ultrasonic speeds and refractive indices of 2-propanol + n-alkanes (C6-C10) systems were experimentally determined at 293.15 K to 303.15 K. Calculated excess molar volume, deviation in ultrasonic speed, refractive index, excess isentropic compressibility and excess intermolecular free length were correlated with Redlich-Kister equation. The excess volume was also interpreted by Flory-Treszczanowicz-Benson (FTB) model and Prigogine-Flory-Patterson (PFP) theory. While the excess molar volume were predicted well with FTB model, PFP theory able to describe sign and magnitude of excess molar volume values in propanol rich region but failed to describe in propanol lean region. For the theoretical estimation of ultrasonic speed and refractive index values, various correlation and mixing rules were also applied.