40 CFR 721.9790 Benzenesulfonic acid, 2,2′-(1,2-ethenediyl)bis[5-[[4-[bis(2-hydroxypropyl) amino]- 6-[(3-sulfophenyl)amino]-1,3,5-triazin-2-yl]amino] [65 FR 373, Jan. 5, 2000]