72986-91-5 Chromate(5-), bis(3-(hydroxy-kappaO)-4-((1-(hydroxy-kappaO)-8-sulfo-2-naphthalenyl)azo-kappaN1)-1-naphthalenesulfonato(4-))-, pentahydrogen,compd. with 2,2'-iminobis(ethanol) (1:5)