Baby Safety / Compounds / Perfluoroheptanoic acid (PFHpA)

Is Perfluoroheptanoic acid (PFHpA) safe for babies and kids?

Moderate risk for kids

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

What is perfluoroheptanoic acid (pfhpa)?

The IUPAC name is 2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoroheptanoic acid.

Also known as: 2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoroheptanoic acid, Perfluoroheptanoic acid, Tridecafluoroheptanoic acid, Perfluoroenanthic Acid.

IUPAC name
2,2,3,3,4,4,5,5,6,6,7,7,7-tridecafluoroheptanoic acid
CAS number
375-85-9
Molecular formula
C7HF13O2
Molecular weight
364.06 g/mol
SMILES
C(=O)(C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F)O
PubChem CID
67818

Risk for babies

Moderate risk

Infants accumulate Perfluoroheptanoic acid (PFHpA) 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

Perfluoroheptanoic acid (PFHpA) 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

1 regulatory bodyhas classified Perfluoroheptanoic acid (PFHpA).

AgencyYearClassificationNotes
IARC2024IARC — Insufficient data for classification — Perfluoroheptanoic acid (PFHpA; CAS 375-85-9; C7-PFAS carboxylic acid; perfluoroheptanoate) has not been classified by IARC for carcinogenicity (not evaluated in the 2023 Monograph 135 series); PFHpA is a C7 perfluoroalkyl carboxylic acid (C7-PFCA) — one carbon shorter than PFOA (C8) and one carbon longer than PFHxA (C6); it occupies the intermediate position in the perfluorocarboxylic acid homologous series between the shorter-chain PFAS (C4-C6, considered 'short-chain' with lower bioaccumulation) and the longer-chain PFAS (C8+, with well-documented high bioaccumulation and adverse health effects); PFHpA is included in the EU Drinking Water Directive 2020/2184 sum of 20 PFAS ≤0.1 µg/L; it is measured as part of the EPA UCMR5 monitoring program using EPA Method 537.1; PFHpA does not have a standalone MCL in the April 2024 EPA NPDWR (only PFOA, PFOS, PFNA, PFHxS, and HFPO-DA received individual MCLs or were included in the HI framework in that rule); PFHpA is monitored internationally as part of the expanding PFAS regulatory framework, and its toxicological database is less extensive than for PFOA/PFOS but is growing as PFAS research broadens beyond the initial focus on C8 compounds

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 perfluoroheptanoic acid (pfhpa)

  • 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 Perfluoroheptanoic acid (PFHpA):

  • 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 perfluoroheptanoic acid (pfhpa) safe for kids?

Infants accumulate Perfluoroheptanoic acid (PFHpA) 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 perfluoroheptanoic acid (pfhpa)?

Perfluoroheptanoic acid (PFHpA) 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 perfluoroheptanoic acid (pfhpa)?

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 Perfluoroheptanoic acid (PFHpA) in the baby app

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

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Sources (1)
  1. PFHpA Perfluoroheptanoic acid CAS 375-85-9 C7HF13O2 Not IARC Classified; C7 Intermediate Short-Chain (C4-C6) vs Long-Chain (C8+) PFAS Category; ECHA REACH Long-Chain PFCA C7-C18 Definition vs EPA Short vs Long-Chain; Serum Half-Life ~1-2 Years Intermediate PFHxA vs PFOA; PPARα Hepatotoxicity Developmental Thyroid Rodent Potency Intermediate; 6:2 FTOH 7:1 FTOH 8:2 FTOH Atmospheric OH Radical Degradation Precursor; Arctic Snow Ice Remote Atmospheric Deposition; EU DWD 2020/2184 Sum 20 PFAS 0.1 µg/L; EPA UCMR5 EPA Method 537.1 Monitoring; No April 2024 US MCL; WHO 2022 Drinking Water Guidelines PFHpA Included; EU REACH Universal PFAS Restriction 2023 Proposal All PFAS; EU EFSA Sum 20 PFAS Exposure Assessment Development; REACH 2017/1000 C9-C14 PFCA Restriction PFHpA Not Explicitly Covered; Marine Fish Seafood ng/g Levels AFFF Contamination Proximity (2024) — 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 →