Preparation
2,4-Diaminobenzenesulfonic acid?and 2-Aminobenzene-1,4-disulfonic acid diazo, then respectively with the 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid in alkaline and acid conditions coupled, then and 2,4,6-Trichloro-1,3,5-triazine condensation, and ammoniated.
