2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-((2-sulfo-4-((2-(sulfooxy)ethyl)sulfonyl)phenyl)azo)-, sodium salt 6-Amino-4-hydroxy-5-((2-sulpho-4-((2-(sulphooxy)ethyl)sulphonyl)phenyl)azo)naphthalene-2-sulphonic acid, sodium salt 85536-92-1 EINECS 287-580-0