2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-((4'-((4-hydroxyphenyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-3-((4-nitrophenyl)azo)-, disodium salt 4-Amino-5-hydroxy-6-((4'-((4-hydroxyphenyl)azo)-3,3'-dimethyl-(1,1'-biphenyl)-4-yl)azo)-3-((4-nitrophenyl)azo)-2,7-naphthalenedisulfonic acid, disodium salt 68400-36-2 Disodium 4-amino-5-hydroxy-6-((4'-((4-hydroxyphenyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-3-((4-nitrophenyl)azo)naphthalene-2,7-disulphonate EINECS 270-025-1