Effect of calcium chloride on the ternary liquid equilibria of the water-phosphoric acid-1-butanol system at 35°C.

Liquid-liquid equilibria of the ternary system 1-butanol-phosphoric acid-calcium chloride solution (2 or 5% by weight of calcium dihydrate) have been studied at 35° C. The tie-line data are determined. The solvent capacity of 1-butanol and the distribution coefficient of phosphoric acid increase with increase in calcium chloride content of the aqueous phase, indicating the salting out effect of calcium chloride on phosphoric acid. © 1969, American Chemical Society. All rights reserved.