Investigation of solubility in multicomponent electrolyte solutions

Results are presented of experimental investigations of solid-liquid equili bria in multicomponent systems containing sodium sulphate and sulphites. Th e measurements are made using polythermal method. The methodology developed is tested by comparing the experimental results and literature data of sol ubility of pure compounds. The experimental data for multicomponent solutio ns are used for the verification of solid-liquid equilibrium model presente d earlier. A good agreement between measured and calculated equilibrium tem peratures is found.