2-Naphthalenecarboxylic acid, 3-hydroxy-4-((4-chloro-3-sulfophenyl)azo)-, manganese salt (1:1) 2-Naphthalenecarboxylic acid, 4-((4-chloro-3-sulfophenyl)azo)-3-hydroxy-, manganese(2+) salt (1:1) 73385-04-3