nitro dye

dye

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In dye: Xanthene and related dyes
Its derivative with a nitro group ortho to sulfur is methylene green, which has excellent lightfastness on acrylics. Some thiazines—namely, those with X = NR but lacking the ―N(CH₃)₂ groups—are antihistamines. A number of oxazines and acridines are good leather dyes. Mauve is an azine but is of only…
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