Viscosity and activation parameters of viscous flow of sodium cholate aqueous solution

Viscosity, density and electrical conductance of sodium cholate aqueous solution in dilute concentrations are reported. Concentration and temperature effects on the viscosity are discussed. Molar conductance of the salt at infinite dilution is obtained by fitting experimental conductivity in Quint-Viallard equation. Viscosity data is analyzed by Jones-Dole equation, and viscous B-coefficient and activation parameters are evaluated, which shows a strong effect of sodium cholate aggregation on viscosity flow. Our result shows that salt diffusion is characterized by molecular aggregation, and is enhanced progressively as the concentration of bile salt monomer increases.