LAUSR

Abstract Densities of pure ester diethyl tartrate and alcohols isobutanol and isopentanol are measured on high pressures up to 60 MPa and temperatures from 293.15 K to 413.15 K, while thermophysical properties for two systems ester + alcohol are obtained on atmospheric pressure and temperatures 288.15–323.15 K. High pressure densities were correlated with Tammann-Tait equation. Experimental data on atmospheric pressure for mixtures were used to determine derived properties, excess molar volume, viscosity and refractive index deviations, which are then correlated with Redlich-Kister polynomial equation. To support the discussion regarding interactions, FT-IR analyses of pure components and mixtures with highest absolute values of excess molar volume were presented. Additionally, viscosity modelling was performed with predictive and correlative models and results were discussed from the point of potential usage of applied models to calculate viscosity of investigated systems.