Densities, refractive indices, and viscosities of N,N-diethylethanol ammonium chloride-glycerol or -ethylene glycol deep eutectic solvents and their aqueous solutions

In this work, we report new experimental data on density, rho, refractive index, n(D), and viscosity, eta, of two deep eutectic solvents, N,N-diethylethanol ammonium chloride-glycerol (DEACG) and N,N-diethylethanol ammonium chloride-ethylene glycol (DEACEG), and their aqueous solutions, over the complete composition range, at temperatures from (298.15 to 343.15) K. Densities and viscosities were measured using the vibrating tube and the falling ball techniques, respectively, while the refractive index at the sodium D line was measured using an automatic refractometer. We aimed to represent the measured properties as a function of temperature and composition, and correlated them using the Redlich-Kister-type equation, for density, a polynomial function, for refractive index, and the Vogel-Fulcher-Tammann (VFT) equation, for viscosity. (c) 2013 Elsevier Ltd. All rights reserved.