Skip to Main Content
Specific Isomer Compound Name WHO EPA TEF
(2005)
  ITE TEF
Dioxin:
1 2378 TCDD Tetrachlorodibenzo-p-dioxin 1.00 1.00
2 12378 PeCDD Pentachlorodibenzo-p-dioxin 1.00 0.50
3 123678 HxCDD Hexachlorodibenzo-p-dioxin 0.10 0.10
4 123478 HxCDD Hexachlorodibenzo-p-dioxin 0.10 0.10
5 123789 HxCDD Hexachlorodibenzo-p-dioxin 0.10 0.10
6 1234678 HpCDD Heptachlorodibenzo-p-dioxin 0.01 0.01
7 12346789 OCDD Octachlorodibenzo-p-dioxin .0003 0.001
Furan:
8 2378 TCDF Tetrachlorodibenzofuran 0.10 0.10
9 12378 PeCDF Pentachlorodibenzofuran 0.03 0.05
10 23478 PeCDF Pentachlorodibenzofuran 0.3 0.50
11 123678 HxCDF Hexachlorodibenzofuran .10 0.10
12 123789 HxCDF Hexachlorodibenzofuran .10 0.10
13 123478 HxCDF Hexachlorodibenzofuran .10 0.10
14 234678 HxCDF Hexachlorodibenzofuran .10 0.10
15 1234678 HpCDF Heptachlorodibenzofuran .01 0.01
16 1234789 HpCDF Heptachlorodibenzofuran .01 0.01
17 12346789 OCDF Octachlorodibenzofuran .0003 0.001