Also Called: 1,2,3,4,7,8 Hexachlorodibenzo-p-dioxin;1,2,3,4,7,8-HEXACHLORODIBENZO-P-DIOXIN;1 , 2 , 3 , 4 , 7 , 8-hexaclorodibenzo-p-dioxin;1,2,3,4,7,8 Hexachlorodibenzo-p-dioxin (HxCDD);1,2,3,4,7,8-hexaclorodibenzo-p-dioxin;1,2,3,4,7,8 Hexachlorodibenzop-dioxin;1,2,3,4,7,8-HxCDD;1,2,3,4,7,8-hexachlorodibenzodioxin