Investigation on Thermophysical and Partial Molar Properties of Binary Mixtures of 2-methyltetrahydrofuran with Alkyl Acetates (C1, C3, C5) at T = (298.15, 303.15, 308.15) K

Abstract

The present communication reports the experimental measurements on the density (\(\rho )\), speed of sound (u), and viscosity (\(\eta )\) of binary liquid mixtures of 2-methyltetrahydrofuran (2-MTHF) with methyl acetate (MA), propyl acetate (PA), and pentyl acetate (PnA) at 298.15, 303.15, and 308.15 K and at ambient pressure 0.10 MPa. Using the experimental measured density and speed of sound values, excess molar volumes (\({V}_{m}^\text{E})\), excess molar isentropic compressibility (\({K}_{S,m}^\text{E}\)), and excess in speed of sound (u^E) have been calculated. The deviation in viscosity (Δη) and excess Gibbs energy of activation of viscous flow (Δ \({G}^{*\text{E}})\) were evaluated using the experimental values of viscosity. The excess molar volumes, excess isentropic compressibility, excess in speed of sound, and deviation in viscosity data were fitted using a Redlich–Kister type equation. For the computed and experimental data, the standard deviation values are calculated. The viscosity data have been correlated with the equations of Tamura–Kurata, Grunberg–Nissan, Heric–Brewer, Hind et al., Katti–Chaudhri, and McAllister (four-body interaction) model. In addition, partial molar volumes of the 2-methyltetrahydrofuran with acetates have been determined in terms of the mole fraction concentration unit.