1,1'-(Isopropylidenedi-p-phenylene) bis(2-((5-amino-3-methyl-1-(3-sulphophenyl)-1H-pyrazol-4-yl)azo)benzenesulphonate), sodium salt 83006-51-3 Benzenesulfonic acid, 2-((5-amino-3-methyl-1-(3-sulfophenyl)-1H-pyrazol-4-yl)azo)-, 1,1'-((1-methylethylidene)di-4,1-phenylene) ester, sodium salt EINECS 280-101-6