Volumetric and Viscometric Analyses for l-Glutamic Acid in NaCl Aqueous Solutions at Different Temperatures

The physico-chemical property data for l-glutamic acid in aqueous NaCl solutions were obtained at 0, 0.5, 1.0 and 2.0 mol·kg−1 NaCl and amino acid molalities from 0 to 0.0669 mol·kg−1 between 293.15 and 323.15 K. The influence of NaCl addition on the volumetric and viscometric properties of the amino acid has been studied. From the experimental densities, the apparent molar volumes and transfer volumes of l-glutamic acid in aqueous electrolyte solutions have been calculated. The viscosity data in the studied domain of amino acid molalities have led to the evaluation of the Falkenhagen and Jones–Dole viscosity coefficients of l-glutamic acid in NaCl aqueous solutions. The results have been discussed in terms of interactions occurring in the systems.