Lelievre, Jacques published the artcileComparison of various weak polynitro acids, uncharged or anionic, in water-methanol and water-isopropanol mixtures, Quality Control of 1821-27-8, the publication is Journal de Chimie Physique et de Physico-Chimie Biologique (1970), 67(5), 917-25, database is CAplus.
The pKa of uncharged acids derived from indazole and diphenylamine and also of various anionic acids derived from this amine by fixation of a -CO2- or a -SO3- groups in various positions were determined in a continuous series of water-methanol and water-2-propanol mixtures The influence of the ionic strength on the behavior of the latter compounds is the same as expected by the classical electrostatic theory. But the decrease of the dielec. constant, linked to the insertion of organic solvents, is not expressed by a bigger decrease of their thermodynamic pKa than that of the corresponding uncharged acids. On the contrary, with the isopropanol, the meta and para charged acids have a very important maximum of acidity.
Journal de Chimie Physique et de Physico-Chimie Biologique published new progress about 1821-27-8. 1821-27-8 belongs to catalysis-chemistry, auxiliary class Nitro Compound,Amine,Benzene, name is Bis(4-nitrophenyl)amine, and the molecular formula is C12H9N3O4, Quality Control of 1821-27-8.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia