ANALYSIS OF REACTIVE DYES AND RELATED DERIVATIVES USING HIGH-PERFORMANCE CAPILLARY ELECTROPHORESIS

Analysis of mixtures of reactive dyes has traditionally been carried out using TLC (thin-layer chromatography). More recently, HPLC (high-performance liquid chromatography) has been used. This paper describes the analysis by both HPLC and the relatively new technique of HPCE (high-performance capillary electrophoresis) of a series of reactive dyes based on substituted triazine azo derivatives of H-Acid and non-reactive derivatives of these dyes. Triazine substituents include chloro, pyridinium and 3-carboxypyridinium in the case of the reactive forms of the dye; non-reactive forms consisted of amino- and hydroxy-triazines.