Volumetric Properties of (Difurylmethane + an Amide) Binary Mixtures at 293.15K, 298.15K and 303.15 K

Densities (ρ) of pure difuryl methane (DFM), N-methylformamide (NMF), N-ethylformamide (NEF), N,N-dimethylformamide (DMF) and N,N-dimethylacetamide (DMA) and those of [DFM + (NMF or NEF or DMF or DMA] binary mixtures over the entire composition range, have been measured at ( T = 293.15, 298.15 and 303.15) K and atmospheric pressure. Excess molar volumes ( ), of each binary system were calculated and correlated by the Redlich-Kister equation. values for each binary system were negative at each of the three temperatures investigated ( T = 293.15, 298.15 and 303.15) K. The values decreased with temperature increase for each of the binary systems investigated. Sign and magnitude of are discussed in-terms of type and nature of intermolecular interactions that occur in a binary mixture. The data have been used to derive excess partial molar volumes ( ), limiting excess partial molar volumes ( ) and limiting partial molar volumes at infinite dilute region ( ) of each component of the binary mixture. Results are discussed in terms of possible intermolecular interactions and structural effects that occur in the binary mixtures.