Understanding the dissociation of polyprotic acids in solution is important for many branches
of chemistry and related sciences. A most important and at the same time knotty problem is …

Ionic equilibrium of 22 hydroxyxanthenes, including halogen and nitro derivatives of
fluorescein, and their thio-and aza analogues, were studied spectrophotometrically in …

Among various fluorescein dyes, nitro derivatives are less studied. At the same time, these
compounds have some unusual properties. This article reports on the behavior of new dyes …

Fluorescein and sulfonefluorescein dyes are stable in solution within a wide pH range.
Nucleophilic addition of the hydroxide (HO–) group to the nodal carbon atom is not typical of …

In this paper, the acid-base and tautomeric equilibria of four nitrofluorescein dyes, 2, 4, 5, 7-
tetranitrofluorescein, 2, 4, 5, 7, 4'-pentanitrofluorescein, 2, 4, 5, 7, 5'-pentanitrofluorescein …

Fluorescein dyes are widely used in different brunches of chemistry and related sciences,
first of all owing to their unique fluorescent properties. Among these compounds, nitro …

In this chapter, we are going to discuss acid-base dissociation and tautomeric equilibrium of
nitroderivatives of fluorescein in buffered solutions in aprotic solvents. In the previous …