Anthraquinone reactive dyes:- Explained in
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Anthraquinone reactive dyes
Until the end of the 1970s, anthraquinone reactive dyes dominated the commercially available bright blue dyes, despite their relatively low color strength and hihg cost. Their molar extinction codfficient (Emax) is in the range of 12,000-1,000 Lmol4cm4, which is about one half that of an azo dye. However, anthraquinone dyes have good fastness properties. The moset commonly used anthraquinone reactive dyes are derived from bromamine acid and by variation of ring substituents give bluish-violet to bluish green hues. The bright reddish to mid-blue hues are the most important with C.I. Reactive Blue 5 serving as an example
