Thermodynamic properties from conductance data are reported for the NaBPh4 electrolytic solutions in 2-methoxyethanol (component 1)/water (component 2) binary solvent mixtures, working at 19 temperatures ranging from -10 to +80-degrees-C and for 6 mixtures covering the 0.1865 less-than-or-equal-to x1 less-than-or-equal-to 1 composition range. Experimental conductivity data were analysed using the Fuoss-Hsia equation, and the chosen salt was found to associate to a certain extent in these solvent mixtures. The resulting dissociation constants (K) of the ion-pair have been used to test some empirical equations K = K(T), K= K(x1), and K = K(T, x1). Furthermore, the present findings have been compared with our previously reported results from working with picric acid in the same mixtures and experimental conditions.