Synthesis and evaluation of non-genotoxic direct dyes

Jin Seok Bae, Harold S. Freeman

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Non-genotoxic diamines 2,2'-dimethyl-5,5'-dipropoxybenzidine and 5,5'-dipropoxy-benzidine were employed as potential alternatives to benzidine in the synthesis and evaluation of new direct dyes for cotton. Assessment of the resultant dyes indicated that both diamines can be used to prepare new direct dyes having colors and fastness properties that make them comparable to commercial direct dyes, and that the structures of the new direct dyes can be confirmed by negative ion electrospray mass spectrometry (ESMS). The mutagenic properties of new direct dyes were established using the standard Ames Salmonella mammalian mutagenicity assay.

Original languageEnglish
Pages (from-to)140-146
Number of pages7
JournalFibers and Polymers
Volume3
Issue number4
DOIs
StatePublished - 2002

Keywords

  • Benzidine replacement
  • Direct dyes
  • Electrospray ionization mass spectrometry
  • Mutagenicity
  • Wash- and light-fastness

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