Baby Safety / Compounds / Tetrahydrofuran

Is Tetrahydrofuran safe for babies and kids?

Elevated risk for kids

Infants are vulnerable to Tetrahydrofuran through inhalation of volatile residues in household products. Immature blood-brain barrier and higher respiratory rate per body weight amplify CNS exposure.

What is tetrahydrofuran?

The IUPAC name is oxolane.

Also known as: oxolane, Furanidine, Furan, tetrahydro-, Tetramethylene oxide.

IUPAC name
oxolane
CAS number
109-99-9
Molecular formula
C4H8O
Molecular weight
72.11 g/mol
SMILES
C1CCOC1
PubChem CID
8028

Risk for babies

Elevated risk

Infants are vulnerable to Tetrahydrofuran through inhalation of volatile residues in household products. Immature blood-brain barrier and higher respiratory rate per body weight amplify CNS exposure.

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

Context-dependent

Occupational and household exposure to Tetrahydrofuran during pregnancy is associated with developmental toxicity. Solvents readily cross the placenta and can cause fetal growth restriction.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

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

Regulatory consensus

6 regulatory and scientific bodies have classified Tetrahydrofuran. The classifications differ — that's the data.

AgencyYearClassificationNotes
OSHA—Occupational exposure limit
EPA CTX / IRIS—Suggestive evidence of carcinogenic potential
EPA CTX / IARC—Group 2B - Possibly carcinogenic to humans
EPA CTX / CalEPA—Known human carcinogen
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 11 negative reports)
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 11 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 tetrahydrofuran

  • 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 Tetrahydrofuran:

  • Bio-based polymer alternatives where available
    Trade-offs: Performance limitations. End-of-life complexity.
    Relative cost: 2-5× conventional

Frequently asked questions

Is tetrahydrofuran safe for kids?

Infants are vulnerable to Tetrahydrofuran through inhalation of volatile residues in household products. Immature blood-brain barrier and higher respiratory rate per body weight amplify CNS exposure.

What products contain tetrahydrofuran?

Tetrahydrofuran 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 tetrahydrofuran?

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.

Why do regulators disagree about tetrahydrofuran?

Tetrahydrofuran has been classified by 6 agencies including OSHA, EPA CTX / IRIS, EPA CTX / IARC, EPA CTX / CalEPA, EPA CTX / Genetox, with differing conclusions. 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. See the regulatory consensus table on this page for the full picture.

See Tetrahydrofuran in the baby app

Look up products containing tetrahydrofuran, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)
  1. NIOSH Pocket Guide: Tetrahydrofuran — IDLH 2000 ppm; PEL 200 ppm; peroxide formation hazard; CNS depression; reproductive toxicant; pharmaceutical ICH Class 2 solvent; skin notation (2019) (2019) — regulatory
  2. OSHA: THF in PVC Pipe Cement — plumbing worker exposure; confined space inhalation; engineering controls; dermal absorption; ACGIH TLV 50 ppm reproductive concern; peroxide explosion risk (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 →