Diffusion Coefficients of the Ternary System Calcium Chloride−Caffeine−Water at (25 and 37) °C

Abstract

Ternary mutual diffusion coefficients measured by the Taylor dispersion method are reported for aqueous solutions of CaCl2−caffeine at carrier concentrations from (0.0025 to 0.0500) mol·dm−3 for each solute, respectively. The results are compared with those obtained for the binary systems H2O−CaCl2 and H2O−caffeine, also reported here. From these data, it is possible to make conclusions about the influence of the caffeine solutes in the diffusion of calcium chloride and to contribute to a better understanding of the structure of this system.