trisodium 4-amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[(4-sulphonatophenyl)azo]naphthalene-2,7-disulphonate;4-Amino-5-hydroxy-3-[(4-nitrophenyl)azo]-6-[(4-sulfophenyl)azo]-2,7-naphthalenedisulfonic acid trisodium salt;C.I.20480;C.I.Acid Black 41
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