PFNA (Perfluorononanoic acid)

Safety Summary

Regulatory Status

Sources

These citations are the ones recorded for the human adult context.

• IARC Monographs Volume 135 (2023): Perfluorooctanoic Acid (PFOA) and Perfluorooctanesulfonic Acid (PFOS) — PFOA classified Group 1 (carcinogenic to humans); PFOS Group 2B. NOTE: this PFAS was NOT among the agents individually evaluated in Volume 135. REGULATORY · 2023
• US EPA: National Primary Drinking Water Regulations for PFAS (April 2024 Final Rule) — Individual MCLs for PFOA (4 ppt), PFOS (4 ppt), PFNA (10 ppt), PFHxS (10 ppt), HFPO-DA (10 ppt); Hazard Index for Mixtures REGULATORY · 2024
• Stockholm Convention decision SC-12/12 (2025): long-chain perfluorocarboxylic acids, their salts and related compounds listed in Annex A, defined as CnF2n+1COOH with 8 ≤ n ≤ 20; PFNA is C9 (n = 8). REGULATORY · 2025
• § 141.61 Maximum contaminant levels for organic contaminants. REGULATORY
• National Primary Drinking Water Regulations | US EPA REGULATORY
• Per- and Polyfluoroalkyl Substances (PFAS) | US EPA REGULATORY
• ECHA Annex VI to CLP: the unofficial Excel table (up to and including the 23rd ATP) (secondary: unofficial by its own statement) REGULATORY
• Stockholm Convention: The New POPs (the Convention's own index of listed chemicals) REGULATORY
• Permissible Exposure Limits – OSHA Annotated Table Z-1 REGULATORY
• OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY
• where to look Haz-Map, Information on Hazardous Chemicals and Occupational Diseases, as recorded by PubChem (Experimental Properties, CID 67821; where-to-look, not a source of this value) DATABASE · 2026
• Toxicological Profile for Perfluoroalkyls (ATSDR, Released May 2021) ASSESSMENT
• EPA CompTox CTX API: predicted properties for DTXSID8031863 (PFNA (Perfluorononanoic acid)) REFERENCE

Same data as the API response, which is open and needs no key. The full per-record source list is available to authenticated callers.