Volumetric and viscometric properties of binary and ternary mixtures of monoethanolamine, 2-(diethylamino) ethanol and water from (293.15 to 333.15) K

Highlights: • Densities and viscosities for binary and ternary solutions of MEA, DEEA and H₂O were measured. • Excess molar volume, partial molar volume and apparent molar volume were calculated. • Viscosity deviation, activation enthalpy, activation entropy and Gibbs free energy were calculated. • Volumetric and viscometric properties were analyzed through the molecular structure and intermolecular interactions. -- Abstract: The densities and viscosities of binary mixtures monoethanolamine (MEA) + H₂O, 2-(Diethylamino)ethanol (DEEA) + H₂O, MEA + DEEA and ternary mixtures MEA + DEEA + H₂O were measured over the entire composition at temperatures ranging from (293.15 to 333.15) K and atmospheric pressure. The volumetric and viscometric properties such as excess molar volume, partial molar volume, partial molar volume at infinite dilution, apparent molar volume, viscosity deviation, molar enthalpy, molar entropy and the molar Gibbs energy of activation for viscous flow of mixtures were calculated in terms of experimental data, respectively. Furthermore, excess molar volumes were fitted by the Redlich–Kister equation for binary mixture and by Cibulka equation for ternary solution. The volumetric and viscometric properties were analyzed through the molecular structure and intermolecular interactions.