PBT photo identifier

PBT

The PBT List

The PBT List includes the "worst of the worst". Substances were placed on this list according to a selection process included in the PBT Rule. Consult the PBT Rule for a complete list of all chemicals and their Chemical Abstracts Service (CAS) Registry Numbers.*

Chemicals Aldrin
Chlordane
Chlordecone (Kepone)
Dichlorodiphenyltrichloroethane (DDT)
Dieldrin
Endrin
Heptachlor/Heptachlor epoxide
Hexabromobiphenyl
Hexabromocyclododecane
Hexachlorobutadiene
Methyl mercury
Mirex
Pentachlorobenzene
Short-chain chlorinated paraffins
Tetrabromobisphenol A
Tetrachlorobenzene, 1,2,4,5-
Toxaphene
Chemical groups Perfluorooctane sulfonates (PFOS)
Polycyclic aromatic hydrocarbons (PAHs)*
Polybrominated dibenzodioxins and furans
Polybrominated diphenyl ethers (PBDEs)
Polychlorinated biphenyls (PCBs)
Polychlorinated dibenzo-p-dioxins*
Polychlorinated dibenzofurans
Polychlorinated naphthalenes
Metals of concern Cadmium
Lead

*Note: Two CAS numbers are listed incorrectly in the PBT rule:
  • The correct CAS number for 1,2,3,6,7,8 Hexachlorodibenzo-p-dioxin is 57653-85-7.
  • The correct CAS number for dibenzo(a,h)pyrene is 189-64-0.
These errors will be corrected in a future update of the PBT rule.