73003-29-9 Chromate(3-), bis(4-(4,5-dihydro-4-((2-(hydroxy-kappaO)-5-methyl-3-nitrophenyl)azo-kappaN1)-3-methyl-5-(oxo-kappaO)-1H-pyrazol-1-yl)benzenesulfonato(3-))-, trihydrogen, compd. with 2,2'-iminobis(ethanol) (1:3)