... -sulfonic acid;2-Amino-5-naphthol-7-sulfonic acid;J acid; CAS NO : 87-02-5 7-Amino ... sulfonic acid;2-Amino-5-naphthol-7-sulfonic acid;J acid;6-Amino-1-naphthol-3-sulfonic acid; ... slightly soluble in water, soluble in ethanol almost. J acid and ferric chloride solution total heat generation brown sediments ... blue, BLUE B2R, active red, brilliant orange, green and reddish brown dye, etc., can be used in the ...