Excess Speed of Sound and Excess Molar Isentropic Compressibility in Binary Mixtures of Selected Amines in 2-Methoxy Ethanol at Various Temperatures

Speeds of sound and density of the mixtureswere measured in the binaries of 2-methoxy ethanol (2-ME) with selected amines (diethylamine (DEA), triethylamine (TEA), tert-butylamine (TBA)) at 298.15, 303.15, 308.15 and 313.15 K at 0.1MPa. We used the measured data to calculatethe excess speeds of sound, , excess molar isentropic compressibility, .The computed quantities were fitted to the Redlich-Kister polynomial equation to derive the coefficients and estimate the standard error values. The excess speed of sound values vary from 18.41 ms-1 to 45.06 ms-1 and in case of excess molar compressibility, the observed range is -1.0270 x 1014 m5N-1mol-1 to -0.4070 x 1014 m5N-1mol-1 among all the systems considered. The excess partial molar volume and isentropic compressibility of the constituents at infinite dilution were also calculated. The consolidation of all the results and information drawn from them indicate that there exist strong interactions between the selected alcohol and the molecules of aliphatic amines.