Reactive Orange 20

synthetische2-Aminobenzene-1,4-disulfonic acid diazo, and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and 2,4,6-Trichloro-1,3,5-triazine condensation, its product (2 mol) and 1,2-Bis(4-amino-2-sulfophenyl)ethene (1 mol) of the condensation.