[article]
| Titre : |
Detection of carcinogenic amines in azo dyes |
| Type de document : |
texte imprimé |
| Auteurs : |
F. Planelles, Auteur ; E. Verdù, Auteur ; D. Campello, Auteur ; N. Grane, Auteur ; J. M. Santiago, Auteur |
| Année de publication : |
1998 |
| Article en page(s) : |
p. 45-52 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The proclamation of 15 july 1994 of the German law concerning consumer goods, which prohibits dyes that, after the processes of reductive cleavage give certain amines, has necesitated the developed of a methodology of analysis or arylamines, the influence of the conditions of the reducing agent/dye ratio, the pH of the medium, the reaction time and the temperature in the reduction process (sodium dithionite) of hte azo dyes Direct Red 28, Acid Red 114 and Direct Blue 35 have been studied. It has been proved that the most suitable conditions for work can vary quite significantly from one dye to antoher, but if we use those conditions which are most extreme, we are assured in any case of the greatest possible yields of arylamines.
Finally, it is reported that the maximum experimental concentration of arylamine obtained in each dye approximates quite well to the theoretical estimated values, which indicates thate the yield of reductive cleavage of the azo group using sodium dithionite as a reducing agent is practically 100 %. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7863 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 82, N° 2 (03-04/1998) . - p. 45-52
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