Synonyms: Cobaltate(1-), bis(4-(hydroxy-kappaO)-3-(2-(2-(hydroxy-kappaO)-1-naphthalenyl)diazenyl-kappaN1)benzenesulfonamidato(2-))-, hydrogen, compd. with 2-propanamine (1:1:1);Cobaltate(1-), bis(4-hydroxy-3-((2-hydroxy-1-naphthalenyl)azo)benzenesulfonamidato(2-))-, hydrogen, compd. with 2-propanamine (1:1);Hydrogen bis(4-hydroxy-3-((2-hydroxy-1-naphthyl)azo)benzenesulphonamidato(2-))cobaltate(1-), compound with methylethylamine (1:1)