Distribution constants of lower alcohols, acetone, and ethyl acetate in n-hexane-aqueous solutions of inorganic salt systems and the nature of the salting-out effect

The distribution of model oxygen-containing organic nonelectrolytes in n-hexane-aqueous solutions of mineral salts (KF, (NH4)2SO4, K2CO3, K3PO4) and lower alcohol-saturated aqueous solutions of salt (KF, K2CO3, K3PO4) systems are studied at a temperature of 20 ± 1°C. Increments of the methylene and functional groups of organic nonelectrolyte of partition constants logarithm are calculated. It is shown that the nature of the salting-out effect primarily involves strengthening of the salt solution’s structure and growth of the methylene group increment. A comparative characteristic of various salts according to the degree of their structuring effect and the effectiveness of the salting-out of organic nonelectrolytes from aqueous solutions is given.