83733-00-0 EINECS 280-652-2 Sodium (3-(4,5-dihydro-4-((2-hydroxy-5-nitrophenyl)azo)-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulphonamidato(2-))(4-hydroxy-3-((2-hydroxy-1-naphthyl)azo)benzenesulphonamidato(2-))chromate(1-)