Study of Volumetric and Electromagnetic Properties of Binary and Ternary Mixtures of {2-propanol (1) + 1, 3-diaminopropane (2) + 2, 5- dimethoxytetrahydrofuran(3) } at (298.15-328.15) K at 81.5 kPa-Prediction with Geometrical Models

The study of volumetric and electromagnetic properties of liquid mixtures provides valuableinformation on the structure and molecular interactions in solutions. The aim of our researchgroup is developing the thermodynamic data for analysis and identification of molecularinteractions in non-electrolyte solutions at different temperatures [1-4].As part of ongoing research work and following earlier work to measure and identify thecharacteristics of thermodynamic properties of mixtures, we report the density, ρ and refractiveindex, n(D) of binary and ternary mixtures consisting of 2-propanol, 1, 3-diaminopropane, and 2,5-dimethoxytetrahydrofuran which have been measured at different temperatures. Excess molarvolumes V(E)(m) and partial excess molar volumes (...) , refractive index deviations Δn(D) , excessthermal expansion coefficient and isothermal coefficient of pressure excess molarenthalpy (....) for binary and excess molar volumes V(E)(m) and refractive index deviationsΔn(D) for ternary mixtures were derived V(E)(m) and for Δn(D) binary mixtures were correlated withthe Redlich‒Kister polynomial equation [1] and prediction geometrical solution models wereused to predict excess molar volume and refractive index deviations of ternary mixtures andstandard deviation for their fitting was reported [4].The effect of temperature on the excess molar volumes and refractive index deviations arediscussed in terms of molecular interaction between unlike molecules. Positive deviation fromideal state were recorded for excess volume in mixture of 1, 3-diaminopropane + 2, 5-dimethoxytetrahydrofuran and 2-propanol + 2, 5-dimethoxytetrahydrofuran solution. Howeverin mixture of 2-propanol and 1, 3-diaminopropane negative deviation in the high composition of1, 3-diaminopropane varies to positive in the dominated mole fraction of alcohol which wasanalyzed to interpret the molecular interactions.