Abstract

The extent of solubilization of lithium carboxylates with carboxylic acids in hydrocarbon solvents depends greatly upon the structure of the anion, and, to a lesser degree, upon the structure of the hydrocarbon solvent. Branching of the aliphatic carbon chain or the alicyclic carbon ring of the carboxylate and the carboxylic acid molecules is essential for solubilization. Noncorresponding acids or mixtures of acids solubilize a relatively larger amount of a carboxylate than the corresponding acid. Appreciable amounts of normal carboxylates are soluble only when the acid is a substantial fraction of the liquid phase. The mechanism of the solubilization of lithium carboxylates with carboxylic acids involves the cooperative formation of association micelles governed by the law of chemical equilibrium. The solutions are thermodynamically stable.

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