2-Naphthalenesulfonic acid, 7-amino-4-hydroxy-3-((2-methoxy-4-((3-sulfophenyl)azo)phenyl)azo)-, compd. with 2,2',2''-nitrilotris(ethanol) (1:2) 7-Amino-4-hydroxy-3-((2-methoxy-4-((m-sulfophenyl)azo)phenyl)azo)-2-naphthalenesulfonic acid, compd. with 2,2',2''-nitrilotriethanol (1:2) 72208-31-2