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PRELIMINARY COMMUNICATION: Application of high‐performance liquid chromatography in the analysis of direct dyes in semipermanent hair colouring cosmetics
Author(s) -
MARIANI E.,
NEUHOFF C.,
VILLA C.
Publication year - 1997
Publication title -
international journal of cosmetic science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 62
eISSN - 1468-2494
pISSN - 0142-5463
DOI - 10.1111/j.1467-2494.1997.tb00168.x
Subject(s) - hair dyes , chemistry , chromatography , high performance liquid chromatography , cosmetics , gradient elution , organic chemistry , dyeing
A method for the identification and the quantification of direct dyes in semipermanent hair colouring cosmetics by using a reversed phase high‐performance liquid chromatography (HPLC) with gradient elution and diode array detector (DAD) detection is presented. A standard mixture of 18 commonly marketed dyestuffs (11 nitroderivatives, two anthraquinones and five Arianor dyes) was studied. The major problems in the analysis of the mixture of direct dyes is the different chemical structure and especially the wide range of polarities. However we succeeded in the complete separation of the standard dyes. A qualitative analysis of eight colouring commercial products selected from different shades and a quantitative analysis of three of them was carried out. Materials, methods and results are reported. Resume. On presente une methode simple d'analyse pour identifier et quantifier les colorants directs dans des teintures capillaires semipermanentes, en utilisant la HPLC a polarite de phase inversee avec le DAD pour la detection. Avec cette methode on a separe 18 colorants directs provenant de classes chimiques differentes (11 composes nitres, deux antraquinones et cinq colorants Arianor) et on a identifie les colorants dans huit teintures capillaires de differentes nuances; pour trois teintures on les a aussi quantifies. La technique employee s'est revelee tres efficace pour la caracterisation des colorants utilises en teintures semipermanentes.