1-Propanesulfonic acid, 3-(ethyl(3-methyl-4-((4-(phenylazo)phenyl)azo)phenyl)amino)-, sodium salt 36904-62-8 EINECS 253-266-7 Sodium 3-(ethyl(3-methyl-4-((4-(phenylazo)phenyl)azo)phenyl)amino)propanesulphonate