Studies on the thermodynamics of binary electrolyte system containing mixture of 1,2-dimethoxyethane (DME) and ethylene carbonate (EC) at various temperatures (25, 40, 50, 60 and 70 oC) and mole fractions (1.000, 0.7197, 0.5982, 0.4905, 0.3910, 0.2997 and 0.2157 of DME) was carried out. The parameters (density, viscosity, excess volume, free energy of activation of flow, excess viscosity, d-parameter, excess Gibbs free energy, change in free energy, enthalpy and entropy) of mixing were examined. Generally, the values of density, viscosity, excess viscosity and free energy of activation of flow increased with decrease in mole fraction of DME. Result analyses showed that the trend in values of excess volume, change in free energy and entropy of mixing for mole ratios of DME is: 0.7197 > 0.5982 > 0.4905 < 0.3910 < 0.2997 < 0.2157; while that of d-parameter is: 0.7197 < 0.5982 < 0.4905 > 0.3910 > 0.2997 > 0.2157. In the whole temperature range studied, the negative values of change in free energy of mixing indicate the spontaneous and exergonic nature of the system; whereas the positive values of entropy of mixing suggests the disorderly behavior of the binary electrolyte system. The enthalpy of mixing is zero, which affirms the involvement of non-bonding interactions.