72812-24-9 Chromate(3-), bis(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))-, trihydrogen, compd. with N,N'-bis(2-methylphenyl)guanidine (1:3) EINECS 276-855-0 Trihydrogen bis(3-hydroxy-4-((2-hydroxy-1-naphthyl)azo)-7-nitronaphthalene-1-sulphonato(3-))chromate(3-) , compound with N,N'-bis(o-tolyl)guanidine (1:3)