1,2,3,4,7,8-HEXACHLORODIBENZO-P-DIOXIN 1,2,3,4,7,8-Hexachlorodibenzo(b,e)(1,4)dioxin 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin [Dioxin and dioxin-like compounds] 1,2,3,4,7,8-Hexachlorodibenzodioxin 39227-28-6 D 66 Dibenzo(b,e)(1,4)dioxin, 1,2,3,4,7,8-hexachloro- Dibenzo-p-dioxin, 1,2,3,4,7,8-hexachloro- Hexachlorodibenzo-p-dioxin