화학공학소재연구정보센터
Journal of Chemical and Engineering Data, Vol.56, No.6, 2751-2760, 2011
Volumetric and Viscometric Studies of Some Amino Acids in Aqueous Solutions of Cadmium Chloride at T = (288.15 to 318.15) K and at Atmospheric Pressure
The apparent molar volumes, apparent molar adiabatic compressibilities, and viscosities of glycine, DL-alpha-alanine, DL-alpha-amino-n-butyric acid, L-valine, and L-leucine, in aqueous solutions of cadmium chloride, CdCl2, at different concentrations have been determined in the temperature range (288.15 to 318.15) K from density, sound velocity, and time flow measurements, using a vibrating-tube digital densimeter, ultrasonic multifrequency interferometer, and Ubbelohde type capillary viscometer attached with an automatic viscosity measuring unit, respectively. From these data, partial molar volumes V-2 degrees, partial molar adiabatic compressibilities, K-s,K-2,degrees viscosity B-coefficients, and the corresponding transfer parameters (Delta V-t(2)degrees , Delta K-t degrees (s,2), and Delta B-t), hydration numbers, n(H), and side chain group contributions, dB/dT have been calculated. Transfer parameters are positive and increase with the concentration of CdCl2.