D&C Red # 6 Na Salt;disodium,(4E)-4-[(4-methyl-2-sulfonatophenyl)hydrazinylidene]-3-oxonaphthalene-2-carboxylate;LITHOL RUBINE NA;LITHOL RUBIN BCA;D AND C RED NO 6;PIGMENT RED 57;11070red;2-Naphthalenecarboxylicacid,3-hydroxy-4-[(4-methyl-2-sulfophenyl)azo]-,disodiumsalt