화학공학소재연구정보센터
Journal of Chemical Thermodynamics, Vol.39, No.9, 1219-1230, 2007
Mixing properties of binary mixtures presenting azeotropes at several temperatures
Experimental densities, speeds of sound, and refractive indices of the binary mixtures presenting azeotropes of (ethanol with hexane or heptane or 2-butanone) and (2-propanol with 2-butanone or ethylacetate or cyclohexane) were determined from T = (293.15 to 303.15) K. Excess molar volumes, changes of refractive index on mixing and deviations in isentropic compressibility for the above systems were calculated. A function of the mole fraction and temperature polynomial equation was used to fit these quantities. The standard deviations between experimental and calculated values are shown. (c) 2007 Elsevier Ltd. All rights reserved.