Also Called: Disodium;(6Z)-4-amino-5-oxo-3-[[4-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]phenyl]phenyl]diazenyl]-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate;2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]-6-(phenylazo)-, disodium salt;Disodium 4-amino-5-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]-6-(phenylazo)naphthalene-2,7-disulphonate;2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[2-[4'-[2-(4-hydroxyphenyl)diazenyl][1,1'-biphenyl]-4-yl]diazenyl]-6-(2-phenyldiazenyl)-, sodium salt (1:2);2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-3-[[4'-[(4-hydroxyphenyl)azo][1,1'-biphenyl]-4-yl]azo]-6-(phenylazo)-;disodium salt;C.I. Direct Green 1, C.I.30280;Disodium,(6Z)-4-amino-5-oxo-3-[[4-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]phenyl]phenyl]diazenyl]-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate;4-AMINO-5-HYDROXY-3-((4'-((4-HYDROXY-PHENYL)-AZO)-(1,1'-BIPHENYL)-4-YL)-AZO)-6-(PHENYLAZO)-2,7-NAPHTHALINDISULFONSAEURE-DI-NA-SALZ;2,7-NAPHTHALENEDISULFONIC ACID, 4-AMINO-5-HYDROXY-3-[[4'-[(4-HYDROXYPHENYL)AZO] [1,1'-BIPHENYL]-4-YL]AZO)-6-(PHENYLAZO)-, DISODIUM SALT;C.I. direct green 1;C.I. Direct Green 1* (C.I. 30280*);C.I. direct green 001;C.I. Direct green 1, disodium salt;DIRECT GREEN 1