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Spectrophotometric Studies on Metal‐Dye Complexes I—The Reaction between Solochrome Violet RS (2‐Hydroxy‐5‐sulphophenylazo‐ β‐naphthol) and Tervalent Chromium
Author(s) -
BENTLEY R. B.,
ELDER J. P.
Publication year - 1956
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1956.tb02140.x
Subject(s) - chemistry , chromium , metal , inorganic chemistry , equilibrium constant , nuclear chemistry , organic chemistry
An investigation has been made by spectrophotometric and chromatographic methods of the reaction between an oo′ ‐dihydroxyazo dye and tervalent chromium salts. The two complexes formed have been separated chromatographically and their spectra measured. Equilibrium constants for the interconversion of the two complexes have been determined, together with the heat, free energy, and entropy changes for this reaction.