Volumetric Properties, Viscosity, and Refractive Indices of Different Naringenin Solutions at Several Temperatures

Thermophysical properties including densities and viscosities of naringenin in aqueous solutions of ethanol/1-propanol with alcohol concentrations of (24.00 to 40.00) mol·kg^-1 have been measured as a function of concentration of naringenin at temperatures from (293.15 to 323.15) K and atmospheric pressure. Also, refractive indices for studied systems have been determined at 298.15 K. The measured data were used to calculate the apparent molar volume (V_η), standard partial molar volume (Vη⁰), partial molar volume (V), viscosity B-coefficients, and molar refractions (R_m). The viscosity and refractive index data have been analyzed by Jones-Dole and Lorentz-Lorenz equations, respectively. The trends of variation of experimental and calculated parameters have been discussed according to the interactions between solvents and solute. The obtained results imply that naringenin acts as a structure maker in the studied system.