2,7-Naphthalenedisulfonicacid,4-amino-3-[2-[4'-[2-(1-amino-5-sulfo-2-naphthalenyl)diazenyl][1,1'-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-,sodium salt (1:3)

Names

[ Name ]:
2,7-Naphthalenedisulfonicacid,4-amino-3-[2-[4'-[2-(1-amino-5-sulfo-2-naphthalenyl)diazenyl][1,1'-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-,sodium salt (1:3)

[Synonym ]:
C.I. Direct Black 131
Paradiamine Blue Black 3B Extra Conc

Chemical & Physical Properties

[ Density]:
1.659g/cm3

[ Molecular Formula ]:
C₃₈H₂₈N₈NaO₁₀S₃+

[ Molecular Weight ]:
875.86100

[ Exact Mass ]:
875.09900

[ PSA ]:
334.68000

[ LogP ]:
13.92110

[ Index of Refraction ]:
1.775