2,7-Naphthalenedisulfonic acid, 4-((4'-((2,4-diamino-5-sulfophenyl)azo)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)azo)-3-hydroxy-, sodium salt, compd. with 2,2',2''-(nitrilotris(2,1-ethanediyloxy))tris(ethanol) 85283-97-2 EINECS 286-625-1