Preparation
1,2-Bis(4-amino-2-sulfophenyl)ethene (1 Moore) and 2,4,6-Trichloro-1,3,5-triazine (2 Moore) and 3-Amino-5-hydroxynaphthalene-1,7-disulfonic acid?(2 Moore) condensation, Aniline-2,5-disulfonic acid?diazo, and 2-Aminobenzene-1,4-disulfonic acid coupling, product (2 Moore) diazo, condensed products coupled with the foregoing income.