Synonyms: Hydrogen hydroxy(3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitronaphthalene-1-sulphonato(3-))chromate(1-), compound with 2,2',2''-nitrilotriethanol (1:1);Chromate(1-), hydroxy(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))-, hydrogen, compd. with 2,2',2''-nitrilotris(ethanol) (1:1)