Self-association of substituted benzoic acids. Isopiestic studies of solutions of ortho-substituted benzoic acids in benzene

Vapour-liquid equilibria of dilute solutions of four ortho-substituted (2-ethyl, 2-bromo-, 2-chloro-, 2,4,6-trimethyl-) benzoic acids in benzene have been studied by the isopiestic method at 298.15 K. The values of dimerization constants are given.