ANALYSIS OF SULFONATED PHTHALOCYANINE DYES BY CAPILLARY ELECTROPHORESIS

Sulphonated phthalocyanine dyes may be prepared either by direct sulph onation or by mixed condensation methods. Both syntheses will produce mixtures of products. Such mixtures may be analysed by capillary elect rophoresis to identify the various degrees of substitution and to indi cate the approximate composition of the mixtures.