Baby Safety / Compounds / Pentylene glycol

Is Pentylene glycol 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 Pentylene glycol, 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 pentylene glycol?

The IUPAC name is 1,2-pentanediol.

Also known as: 1,2-pentanediol, pentane-1,2-diol, methyl propyl glycol, Menthoglycol.

IUPAC name
1,2-pentanediol
CAS number
5343-92-0
Molecular formula
C5H12O2
Molecular weight
104.15 g/mol
SMILES
CC1CCC(C(C1)O)C(C)(C)O
PubChem CID
19100

Risk for babies

Context-dependent

Pregnancy alters the metabolism and distribution of Pentylene glycol, 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 Pentylene glycol, 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

2 regulatory and scientific bodies have classified Pentylene glycol. The classifications differ — that's the data.

AgencyYearClassificationNotes
EU_CLP—Acute Tox. 4 (Oral)H302: Harmful if swallowed
INCI——Approved cosmetic ingredient; EC/CN 1223/2009 compliant

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 pentylene glycol

  • cosmetics
  • skincare formulations
  • preservative systems
  • personal care products

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Pentylene glycol:

  • Glycerin (plant-derived) — gold standard humectant, excellent safety profile
    Trade-offs: Consumer preference for 'natural' label; many natural fragrance compounds are potent allergens (limonene, linalool, eugenol); 'natural' ≠ 'safe'; often more expensive than synthetic equivalents.
    Relative cost: 2-5× conventional
  • Hyaluronic acid — naturally occurring, very low sensitization potential
    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: 2-5× conventional
  • Panthenol (provitamin B5) — well-tolerated, additional skin-soothing properties
    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

What products contain pentylene glycol?

Pentylene glycol appears in: cosmetics; skincare formulations; preservative systems.

See Pentylene glycol in the baby app

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

Open in baby View raw API data

Sources (2)
  1. PubChem Compound CID 19100 — database
  2. ATSDR Toxicological Profile — CAS 5343-92-0 — reference

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 →