1,2,3,6,8,9-HEXACHLORODIBENZO-P-DIOXIN 1,2,3,6,8,9-Hexachlorodibenzo(b,e)(1,4)dioxin 58200-69-4 Dibenzo(b,e)(1,4)dioxin, 1,2,3,6,8,9-hexachloro-