The First Century of Successful Applications of Pinacyanol: Some Noteworthy Results

The most important results obtained during the first century of pinacyanol (PIN) application in fundamental and applied research are summarized. main usages PIN described. structural, protolytic, thermodynamic properties dye different systems (aqueous aqueous–organic solutions, premicellar micellar surfactant systems, salt-containing solutions) have been analyzed. Quantitative characteristics intermolecular interactions considered. Self-association dissimilar association with participation other dyes, organic ions molecules, metal complex compounds under 5 × 10?7–8 10?5 mol/L concentrations discussed. analyzed data indicate that at present, as before, scientific interest this is very high.