The N,N-dimethylformamide / ethane-1,2-diol solvent system. Density, viscosity and excess molar volume at various temperatures

Density (rho), kinematic viscosity (nu), and absolute viscosity (eta) are presented for mixtures of ethane-1,2-diol and N,N-dimethylformamide from -10 to +80-degrees-C. The above properties were fitted by empirical equations stating their dependence on temperature and mole fraction of the mixture. Furthermore, some considerations regarding the meaning of the obtained adjustment parameters are made. The excess functions, such as molar volumes V(E), have been derived. The trends of V(E) data vs mole fraction of the mixtures have exhibited markedly negative deviations from ideality, indicating extensive molecular interactions between the components of the binary solvent system.