Baby Safety / Compounds / PFHxA (perfluorohexanoic acid)

Is PFHxA (perfluorohexanoic acid) safe for babies and kids?

Moderate risk for kids

Infants accumulate PFHxA (perfluorohexanoic 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 pfhxa (perfluorohexanoic acid)?

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

Also known as: 2,2,3,3,4,4,5,5,6,6,6-undecafluorohexanoic acid, Perfluorohexanoic acid, Undecafluorohexanoic acid, Hexanoic acid, undecafluoro-.

IUPAC name
2,2,3,3,4,4,5,5,6,6,6-undecafluorohexanoic acid
CAS number
307-24-4
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

Moderate risk

Infants accumulate PFHxA (perfluorohexanoic 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

PFHxA (perfluorohexanoic 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 PFHxA (perfluorohexanoic acid). The classifications differ — that's the data.

AgencyYearClassificationNotes
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 2 negative reports)
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 2 negative reports)

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 pfhxa (perfluorohexanoic acid)

  • Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
  • Occupational Environments — Factories, Warehouses, Transportation vehicles

Safer alternatives

Lower-risk approaches that achieve a similar outcome to PFHxA (perfluorohexanoic acid):

  • Exposure reduction (environmental contaminant)
    Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
    Relative cost: 1.2-2×

Frequently asked questions

Is pfhxa (perfluorohexanoic acid) safe for kids?

Infants accumulate PFHxA (perfluorohexanoic 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 pfhxa (perfluorohexanoic acid)?

PFHxA (perfluorohexanoic acid) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

What should I do if my child is exposed to pfhxa (perfluorohexanoic 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 PFHxA (perfluorohexanoic acid) in the baby app

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

Open in baby View raw API data

Sources (1)
  1. EFSA Panel on Contaminants in the Food Chain (CONTAM): Risk to Human Health Related to the Presence of Perfluoroalkyl Substances in Food — Group TWI 4.4 ng/kg bw/week (sum PFOA+PFNA+PFHxS+PFOS); childhood vaccine antibody response as critical endpoint; fish, drinking water, food contact materials as primary exposure matrices (2020) (2020) — regulatory

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 →