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K acid；1-amino-8-naphthol-4,6-disulfonic acid

Chinese name: K acid
English name: K acid; 1-amino-8-naphthol-4,6-disulfonic acid
Relative molecular weight or atomic weight: 319.32
Appearance: colorless or brown powder
Usage: Mainly used in the preparation of azo reactive dyes, acid dyes and organic pigments.
Preparation or source: derived from 1-naphthylamine-4,6,8-trisulfonic acid by alkali fusion and acidification.

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