Baby Safety / Compounds / n-Butanol

Is n-Butanol safe for babies and kids?

Context-dependent for kids

(Babies-specific data is limited; this page draws from human pregnant context.) Pregnancy alters the metabolism and distribution of n-Butanol, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

What is n-butanol?

The IUPAC name is butan-1-ol.

Also known as: butan-1-ol, 1-butanol, Butyl alcohol, n-butyl alcohol.

IUPAC name
butan-1-ol
CAS number
71-36-3
Molecular formula
C4H10O
Molecular weight
74.12 g/mol
SMILES
CCCCO
PubChem CID
263

Risk for babies

Context-dependent

Pregnancy alters the metabolism and distribution of n-Butanol, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

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.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of n-Butanol, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

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

4 regulatory and scientific bodies have classified n-Butanol. The classifications differ — that's the data.

AgencyYearClassificationNotes
OSHA—Occupational exposure limit
EPA CTX / IRIS—D (Not classifiable as to human carcinogenicity)
EPA CTX / Genetox—Genotoxicity: positive (Ames: positive, 3 positive / 6 negative reports)
EPA CTX / Genetox—Genotoxicity: positive (Ames: positive, 3 positive / 6 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 n-butanol

  • 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 n-Butanol:

  • Fragrance-free formulations
    Trade-offs: Consumer preference for scented products
    Relative cost: Lower (ingredient elimination)
  • Essential oil-based fragrances (with disclosure)
    Trade-offs: Natural does not mean safe — many essential oils are skin sensitizers
    Relative cost: 2-5× conventional

Frequently asked questions

What products contain n-butanol?

n-Butanol appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

Why do regulators disagree about n-butanol?

n-Butanol has been classified by 4 agencies including OSHA, EPA CTX / IRIS, EPA CTX / Genetox, 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 n-Butanol in the baby app

Look up products containing n-butanol, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)
  1. NIOSH Pocket Guide: n-Butanol — IDLH 1400 ppm; ceiling PEL 50 ppm; upper respiratory irritant; CNS narcosis; greater lipophilicity than ethanol; biofuel candidate; ADH metabolism to butyric acid (2019) (2019) — regulatory
  2. OSHA: n-Butanol Solvent Hazard — paint/coating solvent; pharmaceutical extraction; TLV 20 ppm; eye irritant; defatting dermatitis; butanol isomer comparison; ABE fermentation biofuel context (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 →