Name2-Naphthalenesulfonicacid, 5,5'-[carbonylbis(imino-4,1-phenyleneazo)]bis[8-[(4-sulfophenyl)azo]-,sodium salt (9CI) CAS93982-54-8 Synonyms5,5'-(Carbonylbis(imino-p-phenyleneazo))bis(8-((4-sulphophenyl)azo)naphthalene-2-sulphonic) acid, sodium salt EINECS(EC#)301-242-2 Molecular FormulaC45H32 N10 O13 S4 . x Na Molecular Weight435.47408