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Coloranti directi derivati ai 4,4-diaminobenzanilidei III. Obtinerea, caracterizarea si evaluarea toxicitatii unor noi coloranti disazoici simetrici

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: G.M.Simu, S.G.Muntean, M.E.Grad,S.A.Chicu, E.N.V.Şişu

Editorial: Rev.Chim., 57(10), p.1038-1040, 2006.

Rezumat:

The synthesis of two new disazo dyes with symmetrical structure containing 4,4′-diaminobenzanilide as middle component is presented.2-hydroxy-7-naphtalenesulphonic acid and 2-hydroxy-3,6-naphtalenedisulphonic acid were used as coupling components. The dyes were analyzed by TLC,UV-VIS, and their structure was confirmed bay mass spectrometry (FABS). The toxicity of the synthesized dyes and of their precursors was evaluated by biological tests, using the process of methamorphosis in the marine Hydrozoon Hydractinia echinata. The concentration (termed by MRC50) at wich the synthesized dyes antagonize methamorphosis induction was determined

Cuvinte cheie: disazo dyes,4,4'-diaminobenzanilide, toxicity