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Molecular formula : CAS :
nature : acid called L acid or azure. Solid white or red bit on the Muddy. From 1-naphthylamine-5-sulfonate and Bisulfite were hot, then increasing alkaline hydrolysis, and acidification to be. Also from 1,5-disulfonic acid with caustic soda solution under pressure alkali fusion obtained. Preparation for direct dye and organic pigments intermediates.
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