Baby Safety / Compounds / Acenaphthylene

Is Acenaphthylene safe for babies and kids?

Moderate risk for kids

Infants are more vulnerable to Acenaphthylene than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is acenaphthylene?

Also known as: Acenaphthalene, Cyclopenta[de]naphthalene, Cyclopenta(de)naphthalene, NSC-59821.

IUPAC name
acenaphthylene
CAS number
208-96-8
Molecular formula
C12H8
Molecular weight
152.19 g/mol
SMILES
C1=CC2=C3C(=C1)C=CC3=CC=C2
PubChem CID
9161

Risk for babies

Moderate risk

Infants are more vulnerable to Acenaphthylene than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

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

Pregnancy alters the metabolism and distribution of Acenaphthylene, 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

1 regulatory bodyhas classified Acenaphthylene.

AgencyYearClassificationNotes
EPA CTX / IRIS—D (Not classifiable as to human carcinogenicity)

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 acenaphthylene

  • 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 Acenaphthylene:

  • Exposure reduction (combustion byproduct)
    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 acenaphthylene safe for kids?

Infants are more vulnerable to Acenaphthylene than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain acenaphthylene?

Acenaphthylene 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 acenaphthylene?

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 Acenaphthylene in the baby app

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

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Sources (2)
  1. IARC Monographs: Pyrene, Fluoranthene, Acenaphthylene, Acenaphthene, Fluorene, Anthracene — Group 3 (Not Classifiable as to Carcinogenicity); Relevant volumes include Vol 32 (1983) and Vol 92 (2010) (2010) — regulatory
  2. US EPA: 16 Priority Polycyclic Aromatic Hydrocarbons — Carcinogenic Potency Factors (TEFs), Environmental Monitoring Priority List, Superfund Guidance (SW-846 Method 8270, IRIS Assessments) (1993) — 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 →