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Density and refractive index in binary mixtures of triethylamine–water in the temperature interval (283.15–291.35) K

Densities ρ, refractive indices n, excess molar volumes VE , refractive index deviations Δn, molar refractions Rm and excess molar refractions ΔRm were determined over the full range of compositions for the triethylamine–water binary mixture. The experimental measurements of these properties were carried out at atmospheric pressure and temperatures ranging from 283.15 to 291.35 K. The excess molar volumes VE , excess molar refractions ΔRm and refractive index deviations Δn have been fitted to the fourth-order Redlich–Kister polynomial equation. These quantities have been discussed in terms of intermolecular interactions between the compounds of the mixtures. Refractive indices were compared with those predicted using several mixing rules.