Densities and Viscosities of N,N-Dimethylformamide + N-Methyl-2-pyrrolidinone and + Dimethyl Sulfoxide in the Temperature Range (303.15 to 353.15) K

Densities and viscosities of the binary mixtures of N, N -dimethylformamide + N -methyl-2-pyrrolidinone and N, N -dimethylformamide + dimethyl sulfoxide have been measured at different temperatures and atmospheric pressure, over the entire composition range. From these data, excess molar volumes ( V E ) were calculated for each of the systems. The densities and viscosities of pure components have been compared with those reported by other authors available in the literature. The ρ and η were fitted to a Redlich−Kister equation, and the coefficients of the Redlich−Kister equation and the estimate of standard deviation are also presented.