This book, a collaborative effort of 23 authors, presents in 20 chapters the method used in dyestuff analysis. Thephysicochemical methods customarily used in the analysis of dyestuffs are treated in the first ten chapters (thin-layer chromatography, paper chromatography, paper electrophoresis, high-pressure liquid chromatography, gas chromatography, colorimetry in dyestuff solutions, IR, NMR, and mass spectrometry, as well as X-ray diffraction), though in these descriptions fundamental theoretical and practical knowledge is assumed. The standpoint of methodical application to dyestuff analysis is given prominence, and the articles therefore correspond to the readers' expectations. Somewhat too little information is given in the chapter on mass spectrometry: having 13 pages, it is about the same length as the chapter on gas chromatography (1 1 pages), which is relatively unimportant for dyestuff analysis.
The chapter on methods of chemical degradation is too short, and in addition the references given are sometimes difficultly accessible. Some procedures, e. g. pyrolysis and dry distillation with alkali metal hydroxides, are described too briefly, although in difficult cases these can provide decisive evidence for the structure of a dye.
The identification of dyes and pigments on their substrates is treated well and extensively. A chapter on quantitative dyestuff analysis deals mainly with dyes fixed on textile fibers. Special themes, such as analysis of hair dyes and of dyes for foods, drugs, and cosmetics, are also treated. The conclusion of the book is an opportune contribution to ecological and toxicological problems.
By and large, Venkataraman's new book provides a satisfactory presentation of the themes discussed. The 1200 references help in delving deeper into specific questions. The book closes a gap in the chemical literature; it will be welcomed not only by the dyestuff analyst but will also prove of value to the dyestuff chemist engaged in preparative work.
Dietmar Augart [NB 385 IE]