Equilibrium Constants of Liquid-Liquid Distribution Reactions, Part IV: Chelating Extractants is a compilation of liquid-liquid distribution equilibrium constants, with emphasis on extractants that form chelates. This tabulation includes all data published up to the end of 1972 for the major chelating extractants, and the given equilibrium parameters are supplemented by calculations (or recalculations) from experimental results. This monograph consists of 12 chapters and characterizes the homogeneous equilibria involving the acid dissociation of the extractant in the aqueous phase and adduct or mixed ligand complex formation in the organic phase. The information given for each system includes the chemical reactions, the equilibrium constant, the temperature, and the composition of the aqueous and organic phases. Compounds covered include dialkyldithiocarbamic acids (such as diethyldithiocarbamic acid and dibutyldithioarbamic acid), tropolones (beta-isopropyltropolone and gamma-isopropyltropolone), N-acylhydroxylamines, N-nitroso-N-arylhydroxylamines (cupferrons), alpha-dioximes, diarylthiocarbazones (dithizones), 8-hydroxyquinolines, 8-mercaptoquinolines, o-dimercaptobenzenes (toluene-3,4-dithiol), beta-diketones (such as acetylacetone and hexafluoroacetylacetone), 4-acylpyrazol-5-ones, and o-nitrosophenols (1-nitroso-2-naphthol and 2-nitroso-1-naphthol). This book will be of interest to chemists.