The Complete List of Suppliers for 2-Naphthalenesulfonic acid, 4-hydroxy-7-((((5-hydroxy-6-((2-methoxy-5-methyl-4-sulfophenyl)azo)-7-sulfo-2-naphthalenyl)amino)carbonyl)amino)-3-((4-sulfophenyl)azo)-, disodium salt, compd. with 2,2-iminobis(ethanol) (1:2)