In this work, we reported new experimental data on the molar heat capacity, C-p, and electrical conductivity, kappa, of two ammonium-based deep eutectic solvents (DESs), N,N-diethylethanolammonium chloride-glycerol and N,N-diethylethanolammonium chloride-ethylene glycol, and their aqueous solutions. Heat capacity measurements were performed, using a heat flow differential scanning calorimeter, at atmospheric pressure at temperatures from 303.15 to 353.15 K. The Cp values were found to increase with temperature. Excess molar heat capacities, C-p(E), of the aqueous DES solutions were determined, and represented as function of temperature and DES mole fraction using a Redlich-Kister-type equation. Electrical conductivities were measured from 298.15 to 343.15 kappa, and a modified form of the Arrhenius equation was used to correlate the obtained K data with temperature and DES mole fraction. The applied correlations successfully represented the experimental C-p and kappa data as function of temperature and composition at low average absolute deviations of 0.1 and 1.3%, respectively. (C) 2013 Elsevier B.V. All rights reserved.