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INTERNATIONAL TOXICITY EQUIVALENCY
FACTORS FOR SPECIFIC PCDD
(POLYCHLORODIBENZO-P-DIOXINS) AND PCDF
(POLYCHLORODIBENZOFURANS) CONGENERS
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Congeners Toxicity equivalency factors
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2,3,7,8-T4CDD 1
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1,2,3,7,8-P5CDD 1
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1,2,3,4,7,8-H6CDD 0.1
1,2,3,6,7,8-H6CDD 0.1
1,2,3,7,8,9-H6CDD 0.1
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1,2,3,4,6,7,8-H7CDD 0.01
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OCDD 0.0001
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2,3,7,8-T4CDF 0.1
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2,3,4,7,8-P5CDF 0.5
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1,2,3,7,8-P5CDF 0.05
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1,2,3,4,7,8-H6CDF 0.1
1,2,3,7,8,9-H6CDF 0.1
1,2,3,6,7,8-H6CDF 0.1
2,3,4,6,7,8-H6CDF 0.1
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1,2,3,4,6,7,8-H7CDF 0.01
1,2,3,4,7,8,9-H7CDF 0.01
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OCDF 0.0001
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