Density, viscosity, surface tension, and spectroscopic properties for binary system of 1,2-ethanediamine + diethylene glycol

•Densities and viscosities of EDA + DEG at 298.15–318.150 K were listed.•Thermodynamics data of EDA + DEG at 298.15–318.15 K were calculated.•Surface tension of EDA + DEG at 298.15 K was measured.•Intermolecular interaction of EDA with DEG was discussed.

This paper reports density and viscosity data at T = 298.15, 303.15, 308.15, 313.15, and 318.15 K and surface tension data at 298.15 K for the binary system 1,2-ethanediamine (EDA) + diethylene glycol (DEG) as a function of composition under atmospheric pressure. From the experimental density and viscosity data, the excess molar volume and viscosity deviation were calculated, and the results were fitted to a Redlich–Kister equation to obtain the coefficients and to estimate the standard deviations between the experimental and calculated quantities. Based on the kinematic viscosity data, enthalpy of activation for viscous flow, entropy of activation for the viscous flow, and Gibbs energies of activation of viscous flow were calculated. In addition, based on Fourier transform infrared spectra, UV–vis spectra, and electrical conductivity for the system EDA + DEG with various concentrations, intermolecular interaction of EDA with DEG was discussed.

Graphical abstractExcess property of the binary system 1,2-ethanediamine (EDA) + diethylene glycol (DEG).Figure optionsDownload full-size imageDownload as PowerPoint slide