Einecs 261-429-9

m-[[4-[[4-[bis(2-hydroxyethyl)amino]phenyl]azo]-1-naphthyl]azo]benzenesulphonic acid

3-[[4-[[4-[Bis(2-hydroxyethyl)amino]phenyl]azo]naphthalen-1-yl]azo]benzenesulfonic acid