Name2,7-Naphthalenedisulfonicacid, 5-(acetylamino)-4-hydroxy-3-[2-(3-phosphonophenyl)diazenyl]-, ammoniumsodium salt (1:?:?) CAS85068-62-8 Synonyms2,7-Naphthalenedisulfonicacid, 5-(acetylamino)-4-hydroxy-3-[(3-phosphonophenyl)azo]-, ammonium sodiumsalt (9CI) EINECS(EC#)285-320-0 Molecular FormulaC18H16 N3 O11 P S2 . x H3 N . x Na Molecular Weight623.461601