Abstract
The conductivities of dilute aqueous solutions of lower and middle linear saturated fatty acids were determined at 25 C. The characteristic relationships between conductivity and concentration of solutions of the fatty acids were obtained for each carbon number of the acid, respectively. The experimental equation to present conductivity of a solution as a function of total ionic molar concentration of fatty acids is given by K= 0.375 x C+ 2.0 x 10-6 where K is conductivity (mho/cm), and C is total ionic molar concentration (M) of fatty acid. These relationships and the equation would serve to calibrate the amount of fatty acids in water from conductivity measurement when fatty acids are the predominant components in water and the measurement of conductivity is not interfered with the other ions.
