Effect of properties of the N,N-dimethylformamide-methanol and N,N-dimethylformamide-water mixtures on the solution enthalpy of glymes in these mixtures at 298.15Â K

The enthalpies of solutions of diglyme, triglyme, tetraglyme, pentaglyme and hexaglyme in N,N-dimethylformamide-methanol mixtures (DMF + MeOH) have been measured at 298.15 K. On the basis of the data obtained, the effect of the acid-base properties of the DMF + MeOH mixtures on the standard solution enthalpy of glymes in these mixtures has been analyzed. The results obtained have been compared with analogous data obtained for N,N-dimethylformamide-water (DMF + W) mixtures.