(3-Hydroxy-4-((2-methyl-4-sulphophenyl)azo)-2-naphthoato(2-))manganese 3-Hydroxy-4-((2-methyl-4-sulfophenyl)azo)-2-naphthalenecarboxylic acid, manganese(2+) salt (1:1) 83864-26-0 EINECS 281-149-0 Manganese, (3-(hydroxy-kappaO)-4-((2-methyl-4-sulfophenyl)azo)-2-naphthalenecarboxylato(2-)-kappaO)-