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RESEARCH PRODUCT

Die Dissoziationskonstanten von 2,3?-und 2,4?-Dihydroxydiphenylmethanderivaten

R. WamßerHermann KämmererVolker Böhmer

subject

Aqueous solutionChemistryInorganic chemistryAnalytical chemistryGeneral Chemistry

description

The pK-values of the first and second degree of dissociation of 2.3′-dihydroxy-6′-methyl-3.5-dinitro-diphenylmethane, 2.3′-dihydroxy-6′-methyl-5-nitro-diphenylmethane, 2.3′-dihydroxy-5.6′-dimethyl-3-nitro-diphenylmethane, 2.4′-dihydroxy-3′. 5′-dimethyl-3.5-dinitro-diphenylmethane, 2.4′-dihydroxy-3′. 5′-dimethyl-5-nitro-diphenylmethane and 2.4′-dihydroxy-3′.5.5′-trimethyl-3-nitrodiphenylmethane were determined in aqueous solution at 25°C by the spectrophotometric method. The observed pK-values are compared with those of 2-methyl-4.6-dinitro-phenol, 2-methyl-4-nitrophenol, 2.4-dimethyl-6-nitrophenol, 3.4-dimethylphenol and 2.4.6-trimethylphenol which serve as model compounds for the single phenolic units.

https://doi.org/10.1007/bf00912601