Trisodium 2,4-dihydroxy-3,5-bis[(4-sulfonatophenyl)azo]benzenesulfonate trisodium 2,4-dihydroxy-3,5-bis[(4-sulphonatophenyl)azo]benzenesulphonate Benzenesulfonic acid, 2,4-dihydroxy-3,5-bis(4-sulfophenyl)azo-, trisodium salt 2,4-Dihydroxy-3,5-bis[(4-sulfophenyl)azo]benzenesulfonic acid trisodium salt C.I.20281 C.I.Acid Yellow 105 C.I.Food Yellow 9 Acid Yellow 105