Baby Safety / Compounds / PFPeA (Perfluoropentanoic acid)

Is PFPeA (Perfluoropentanoic acid) safe for babies and kids?

High risk for kids

Infants accumulate PFPeA (Perfluoropentanoic acid) through breast milk (bioconcentration), placental transfer, and dust ingestion. Persistent pollutants concentrate in fatty tissues with extended half-lives in developing organisms.

What is pfpea (perfluoropentanoic acid)?

The IUPAC name is 2,2,3,3,4,4,5,5,6,6,6-undecafluorohexanoic acid.

Also known as: Perfluorohexanoic acid, 307-24-4, Undecafluorohexanoic acid, Hexanoic acid, undecafluoro-.

IUPAC name
2,2,3,3,4,4,5,5,6,6,6-undecafluorohexanoic acid
CAS number
2706-90-3
Molecular formula
C6HF11O2
Molecular weight
314.05 g/mol
SMILES
C(=O)(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)O
PubChem CID
67542

Risk for babies

High risk

Infants accumulate PFPeA (Perfluoropentanoic acid) through breast milk (bioconcentration), placental transfer, and dust ingestion. Persistent pollutants concentrate in fatty tissues with extended half-lives in developing organisms.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Elevated risk

PFPeA (Perfluoropentanoic acid) persists in maternal adipose tissue and is mobilized during pregnancy and lactation. Lipophilic pollutants concentrate in breast milk and cross the placenta during critical developmental windows.

Suspected reproductive toxicant (GHS H361) or suspected endocrine disruptor. Precautionary approach warranted. Animal studies or limited human data suggest developmental toxicity potential.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

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

AgencyYearClassificationNotes
EPA——Included in EPA's 5th Unregulated Contaminant Monitoring Rule (2023-2025)
ECHA——Included in universal PFAS restriction proposal (2023)

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 kids encounter pfpea (perfluoropentanoic acid)

  • Drinking Water — Municipal water supplies near fluorochemical manufacturing, Groundwater near AFFF-impacted sites
    Detected in >10% of US public water systems in EPA UCMR5 (2023-2025)
  • Food Packaging — Grease-resistant food wrappers, Microwave popcorn bags, Fast food containers
    Short-chain replacement in food-contact paper coatings
  • Industrial Discharge — Fluoropolymer manufacturing wastewater, Chrome plating effluent
    WWTP effluent is a major source

Safer alternatives

Lower-risk approaches that achieve a similar outcome to PFPeA (Perfluoropentanoic acid):

  • Non-fluorinated grease barriers (wax, silicone)
    Trade-offs: Functional performance and cost-effectiveness may vary by application.
    Relative cost: 1.2-2×
  • Activated carbon or ion exchange water treatment
    Trade-offs: Functional performance and cost-effectiveness may vary by application.
    Relative cost: 1.2-2×

Frequently asked questions

Is pfpea (perfluoropentanoic acid) safe for kids?

Infants accumulate PFPeA (Perfluoropentanoic acid) through breast milk (bioconcentration), placental transfer, and dust ingestion. Persistent pollutants concentrate in fatty tissues with extended half-lives in developing organisms.

What products contain pfpea (perfluoropentanoic acid)?

PFPeA (Perfluoropentanoic acid) appears in: Municipal water supplies near fluorochemical manufacturing (drinking water); Groundwater near AFFF-impacted sites (drinking water); Grease-resistant food wrappers (food packaging); Microwave popcorn bags (food packaging); Fluoropolymer manufacturing wastewater (industrial discharge).

What should I do if my child is exposed to pfpea (perfluoropentanoic acid)?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

See PFPeA (Perfluoropentanoic acid) in the baby app

Look up products containing pfpea (perfluoropentanoic acid), compare to alternatives, and explore the full data record.

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Sources (1)
  1. — expert_curation

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →