The Dissociation Constants of Monocarboxylic Acids; their Measurement and their Significance in Theoretical Organic Chemistry.

Compilation and critical evaluation of structure-reactivity parameters and equations - Part I: Values of σm, and σp based on the ionization of substituted benzoic acids in water at 25 C (Technical Report)

“…Note 28: OPh a, = 0.252 Dippy (1939) 0.26 Ludwig et a2 (1986) [ 494,3.951,C ,A] [ -,3.95 JWI Mean = 0.256 op = -0.320 Dippy (1939) [ 495,4.523,C ,A]…”

“…The ChemicaJ Reviews article by Dippy (1939), entitled "The dissociation constants of monocarboxylic acids; their measurement and their significance in theoretical organic chemistry", includes references to all this work and summarizes the results, as well as surveying other people's work.…”

“…Dippy and his co-workers [Dippy (1939)l. These were obtained by conductance measurements and were claimed to be 'thermodynamic' constants, i.e.…”

Ultraviolet spectra and dissociation constants of p-hydroxybenzoic acid, methyl, ethyl, n-butyl, and benzyl p-hydroxybenzoate and potassium p-phenolsulfonate

“…The ethyl ester of p-hydroxybenzoic acid was studied in somewhat more detail, with the use of three concentrations: 10-5 M, 2.5XI0- 5 M, and 5XI0-5 M, in the l-cm absorption cells. The series of curves for each concentration covered a different portion of the transmittancy scale, and thus a comprehensive analysis of the spectrophotometric data could be made.…”

“…Their dissociation constants have not been reported by anyone of the three methods mentioned above. Several of the substituted benzoic acids have been studied and reported [5]. The value of the spectrophotometric method is well illustrated by the data for p-hydroxybenzoic acid, where the two steps in the dissociation can be differentiated by a study of the spectral transmittancies.…”