PFBS (Perfluorobutane sulfonate)

Safety Summary

Regulatory Status

Sources

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

• US EPA: Toxicological Review of Perfluorobutane Sulfonate (PFBS) — Thyroid Effects, Reference Dose (0.0003 mg/kg/day), and Hazard Index Grouping with Other Short-Chain PFAS REGULATORY · 2021
• US EPA: National Primary Drinking Water Regulations for PFAS (April 2024 Final Rule) — PFBS in Hazard Index (HI) Mixture Approach; Cumulative Thyroid/Developmental Hazard Assessment REGULATORY · 2024
• Drinking Water Health Advisories for GenX Chemicals and PFBS | US EPA REGULATORY
• Drinking Water Health Advisory: Perfluorobutane Sulfonic Acid (CASRN 375-73-5) and Related Compound Potassium Perfluorobutane Sulfonate (CASRN 29420-49-3) REGULATORY
• identity database ECHA CHEM, Download all substances: REACH registrations (ECHA's own list of REACH-registered substances) REGULATORY · 2026
• where to look PubChem: Toxicity section (CID 67815) PUBCHEM
• OEHHA Proposition 65 List of Carcinogens or Reproductive Toxicants (CSV, list date 31-Jul-26) REGULATORY
• Permissible Exposure Limits – OSHA Annotated Table Z-1 REGULATORY
• D-901 AC1 part A capture: 2026-09-27-d901-partA-comptox-DTXSID5030030 DATABASE
• EPA CompTox CTX API: predicted properties for DTXSID5030030 (PFBS (Perfluorobutane sulfonate)) 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.