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Binary liquid mixtures of 1-butoxy-2-propanol with amines namely diethylamine, dipropylamine and triethylamine have been discussed in the present discussion. Measurements of density and speed of sound of pure liquids and their binary mixtures have been carried out over the entire composition range and temperatures (298.15, 303.15 and 308.15) K. To study the thermodynamic behaviour of these liquid mixtures, various parameters were calculated using the experimentally measured data. Strong intermolecular interactions among the components of binary liquid mixtures were confirmed by calculated parameters. Various excess and deviation properties were correlated to composition using the Redlich–Kister polynomial. Further, density and speed of sound data were correlated with composition using Jouyban–Acree model. The experimental results have been analysed by using Prigogine–Flory–Patterson (PFP) theory.  1 H-NMR spectra of binary mixtures at equimolar composition has also been studied.

Thermodynamic and spectral studies of molecular interactions in binary liquid mixtures of 1-butoxy-2-propanol with amines at different temperatures