72797-09-2 Cobaltate(3-), bis(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))-, trihydrogen, compd. with 2,2'-iminobis(ethanol) (1:3) Cobaltate(3-), bis(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato)-, trihydrogen, compd. with diethanolamine (1:3)