Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Densities, F, of pure N-methylmorpholine (1) + ethanol (2), + 1-propanol (2), + 1-butanol (2), + 1-pentanol (2), + 1-hexanol (2), and + 1-octanol (2) and their binary mixtures were measured using a digital vibrating tube densimeter at 298.15 K. Excess molar volumes, VE, of the binary mixtures were calculated from density values. Excess molar volumes of binary mixtures of N-methylmorpholine (1) + ethanol (2) and + 1-propanol (2) show an S-shaped dependence on composition with positive values in the N-methylmorpholine-rich region and negative values at the opposite extreme. The excess molar volume is positive over the mole fraction range for N-methylmorpholine (1) + 1-butanol (2), + 1-pentanol (2), 1-hexanol (2), and + 1-octanol (2) systems. All experimental VE values were fitted to the Redlich Kister equation.