6505-12-0 Benzoic acid, 5-((4'-((8-((2,4-diaminophenyl)azo)-1-hydroxy-3,6-disulfo-2-naphthalenyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)-2-hydroxy-, trisodium salt C.I. Direct brown 52, trisodium salt EINECS 229-387-6 Trisodium 5-((4'-((8-((2,4-diaminophenyl)azo)-1-hydroxy-3,6-disulphonato-2-naphthyl)azo)-3,3'-dimethyl(1,1'-biphenyl)-4-yl)azo)salicylate