Is PFPeS (Perfluoropentane sulfonic acid) safe for dogs and cats?

What is pfpes (perfluoropentane sulfonic acid)?

The IUPAC name is 1,1,2,2,3,3,4,4,5,5,5-undecafluoropentane-1-sulfonic acid.

Also known as: 2706-91-4, perfluoropentanesulfonic acid, 1-Pentanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,5-undecafluoro-, 1,1,2,2,3,3,4,4,5,5,5-undecafluoropentane-1-sulfonic acid.

IUPAC name

1,1,2,2,3,3,4,4,5,5,5-undecafluoropentane-1-sulfonic acid

CAS number

2706-91-4

Molecular formula

C5HF11O3S

Molecular weight

350.11 g/mol

SMILES

C(C(C(F)(F)F)(F)F)(C(C(F)(F)S(=O)(=O)O)(F)F)(F)F

PubChem CID

75922

Regulatory consensus

2 regulatory and scientific bodies have classified PFPeS (Perfluoropentane sulfonic acid). The classifications differ — that's the data.

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where pets encounter pfpes (perfluoropentane sulfonic acid)

• Drinking Water — Municipal water supplies, AFFF-impacted groundwater
  EPA UCMR5 analyte
• Industrial Discharge — Fluorochemical manufacturing wastewater
  Byproduct of PFAS production

Safer alternatives

Lower-risk approaches that achieve a similar outcome to PFPeS (Perfluoropentane sulfonic acid):

• Non-fluorinated alternatives
  Trade-offs: Functional performance and cost-effectiveness may vary by application.
  Relative cost: 1.2-2×

Frequently asked questions