On October 7, 2025, the U.S. Environmental Protection Agency (EPA) announced that, under the automatic listing mechanism of the National Defense Authorization Act for Fiscal Year 2020 (NDAA), sodium perfluorohexanesulfonate (PFHxS-Na, CAS RN 82382-12-5) has been formally added to the Toxic Release Inventory (TRI). The listing will take effect on January 1, 2026. With this addition, the total number of PFAS subject to TRI reporting has increased to 206.
Background
PFHxS-Na is a common surfactant used in processes such as firefighting foam, metal plating, and semiconductor cleaning. It is persistent, bioaccumulative, and potentially hepatotoxic. In 2025, the EPA released the IRIS Toxicological Review: Perfluorohexanesulfonic Acid (PFHxS, CAS RN 335-46-4) and Related Salts, which for the first time established toxicity values for PFHxS-Na. Although the TRI list previously included PFHxS and other associated salts, PFHxS-Na was not covered.
Recently Added PFAS
|
CASRN |
TRI Chemical Name |
Effective Reporting Year |
Triggering Activity |
|
307-24-4 |
Perfluorohexanoic acid |
2024 |
Final Toxicity Value |
|
422-64-0 |
Perfluoropropanoic acid |
2024 |
Final Toxicity Value |
|
2923-26-4 |
Sodium perfluorohexanoate |
2024 |
Final Toxicity Value |
|
21615-47-4 |
Ammonium perfluorohexanoate |
2024 |
Final Toxicity Value |
|
82113-65-3 |
1,1,1-Trifluoro-N-[(trifluoromethyl)sulfonyl] methanesulfonamide |
2024 |
Final Toxicity Value |
|
90076-65-6 |
Lithium bis[(trifluoromethyl)sulfonyl] azanide |
2024 |
Final Toxicity Value |
|
2816091-53-7 |
Betaines, dimethyl(γ-ω-perfluoro-γ-hydro-C8-18-alkyl) |
2024 |
CBI Declassification |
|
377-73-1 |
Perfluoro-3-methoxypropanoic acid |
2025 |
Final Toxicity Value |
|
3108-42-7 |
Ammonium perfluorodecanoate (PFDA NH4) |
2025 |
Final Toxicity Value |
|
3830-45-3 |
Sodium perfluorodecanoate (PFDA-Na) |
2025 |
Final Toxicity Value |
|
27619-97-2 |
6:2 Fluorotelomer sulfonate acid |
2025 |
Final Toxicity Value |
|
425670-75-3 |
6:2 Fluorotelomer sulfonate anion |
2025 |
Final Toxicity Value |
|
59587-38-1 |
6:2 Fluorotelomer sulfonate potassium salt |
2025 |
Final Toxicity Value |
|
59587-39-2 |
6:2 Fluorotelomer sulfonate ammonium salt |
2025 |
Final Toxicity Value |
|
27619-94-9 |
6:2 Fluorotelomer sulfonate sodium salt |
2025 |
Final Toxicity Value |
|
3030471-22-5 |
Acetic acid, [(γ-ω-perfluoro-C8-10-alkyl)thio] derivs., Bu esters |
2025 |
CBI Declassification |
|
82382-12-5 |
Sodium perfluorohexanesulfonate (PFHxS-Na) |
2026 |
Final Toxicity Value |
Note: All PFAS added to the TRI can be accessed via the following link:
Starting January 1, 2026, relevant enterprises must begin tracking the use and handling of PFHxS-Na in accordance with Section 313 of the Emergency Planning and Community Right-to-Know Act (EPCRA) and submit their first annual report by July 1, 2027.
