5Legislation, Ecology, Toxicology
5.1 Introduction
As a starting point to discussing organic pigments, it should be noted that the specific physicochemical, toxicological and ecological properties of these compounds present an uncommonly small risk potential. Pigments are not only by definition ‘practically insoluble’, but insolubility in water and organic media is a prerequisite for any application of a pigment. So in this respect, organic pigments differ from all other organic chemicals. An attempt to dissolve an organic pigment by applying extreme solvents such as dimethyl sulfoxide or hexamethylphosphoric triamide leads – if at all successful – to dyes or to decomposition.
The analysis of any substance or product that is to be marketed ...
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