Barium 4-[(3-chloro-2-methyl-5-sulfonatophenyl)azo]-3-hydroxy-2-naphthoate2-Naphthalenecarboxylic acid, 4-[(3-chloro-2-methyl-5-sulfophenyl)azo]-3-hydroxy-, barium salt (1:1)C18H13ClN2O6S.Ba67892-41-5267-573-9
