40 CFR Table 3
Toxic Equivalency Factors
June 9, 2020
Open Table
| Dioxin/furan congener | Toxic equivalency factor |
|---|---|
| A. 2,3,7,8-tetrachlorinated dibenzo-p-dioxin | 1 |
| B. 12,3,7,8-pentachlorinated dibenzo-p-dioxin | 0.5 |
| C. 1,2,3,4,7,8-hexachlorinated dibenzo-p-dioxin | 0.1 |
| D. 1,2,3,7,8,9-hexachlorinated dibenzo-p-dioxin | 0.1 |
| E. 12,3,6,7,8-hexachlorinated dibenzo-p-dioxin | 0.1 |
| F. 1,2,3,4,6,7,8-heptachlorinated dibenzo-p-dioxin | 0.01 |
| G. 0ctachlorinated dibenzo-p-dioxin | 0.001 |
| H. 2,3,7,8-tetrachlorinated dibenzofuran | 0.1 |
| I. 2,3,4,7,8-pentachlorinated dibenzofuran | 0.5 |
| J. 1,2,3,7,8-pentachlorinated dibenzofuran | 0.05 |
| K. 1,2,3,4,7,8-hexachlorinated dibenzofuran | 0.1 |
| L. 1,2,3,6,7,8-hexachlorinated dibenzofuran | 0.1 |
| M. 1,2,3,7,8,9-hexachlorinated dibenzofuran | 0.1 |
| N. 2,3,4,6,7,8-hexachlorinated dibenzofuran | 0.1 |
| O. 1,2,3,4,6,7,8-heptachlorinated dibenzofuran | 0.01 |
| P. 1,2,3,4,7,8,9-heptachlorinated dibenzofuran | 0.01 |
| Q. 0ctachlorinated dibenzofuran | 0.001 |
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