Abstract
Thanks to the wide range of applications, azo dyes have a special place among synthetic dyes. Also, the application of azo dyes is conditioned by their impact on humans and the environment. Lipophilicity as one of the most important molecular descriptors indicating the potential biological activity of the compound is determined experimentally for selected derivatives of azo dyes using reversed phase thin-layer chromatography (RP TLC18 F254s) in the mixtures of water and two organic modifiers. By using the relevant software packages for the studied azo dyes, the values of partition coefficient (log P) were calculated as standard measure of lipophilicity, important pharamacokinetic predictors and the values of the effective concetration (EC50) as the criteria of acute toxicity for different test organisms. The relationships between chromatographic parameters (RM 0 and m) and calculated biological activity parameters were studied by linear regression analysis.
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