2-Naphthalenesulfonic acid, 6-amino-5-[(4-amino-2-sulfophenyl)azo]-4-hydroxy-, disodium salt 6360-04-9 Acid Red 34 Amacid Fast Red BBL C.I. 17030 C.I. Acid Red 34 Fast Wool Red BL Light Fast Rubine BL Metamine Fast Light Red 4BL NSC401610 Pontacyl Light Red 4BL