1-[(2-hydroxy-3,5-dinitrophenyl)azo]-2-naphthol;C.I.12200;C.I.Mordant Black 19;2-Naphthalenol, 1-((2-hydroxy-3,5-dinitrophenyl)azo)-;2-Naphthalenol, 1-(2-(2-hydroxy-3,5-dinitrophenyl)diazenyl)-;Einecs 225-663-5
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