2-Naphthalenesulfonic acid, 6-hydroxy-5-[[4-[(4-sulfophenyl)azo]phenyl]azo]-, disodium salt 6406-66-2 C.I. 27000 C.I. Acid Red 142 C.I. Acid Red 142, disodium salt Java Red A NSC58047 Wool Fast Scarlet R