Baby Safety / Compounds / Acetaldehyde

Is Acetaldehyde safe for babies and kids?

Very high risk for kids

Infants are more vulnerable to Acetaldehyde 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 acetaldehyde?

Also known as: ethanal, acetic aldehyde, ethyl aldehyde, Acetylaldehyde.

IUPAC name
acetaldehyde
CAS number
75-07-0
Molecular formula
C2H4O
Molecular weight
44.05 g/mol
SMILES
CC=O
PubChem CID
177

Risk for babies

Very high risk

Infants are more vulnerable to Acetaldehyde 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 Acetaldehyde, 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

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

AgencyYearClassificationNotes
IARC2012Group 1 (carcinogenic to humans)Classified Group 1 as a component of alcoholic beverages (endogenous formation from ethanol metabolism); previously Group 2B (1999, Monograph 71); esophageal, liver, colorectal cancers; Monograph 100E
US EPA1991likely to be carcinogenic to humansEPA IRIS Group B2 (probable human carcinogen) under 1986 Guidelines; no updated IRIS assessment under 2005 Guidelines; nasal tumors in rodents; genotoxic via DNA adduct formation
EPA CTX / NIOSH—potential occupational carcinogen
EPA CTX / IRIS—B2 (Probable human carcinogen - based on sufficient evidence of carcinogenicity in animals)
EPA CTX / NTP RoC—Reasonably Anticipated to be a Human Carcinogen
EPA CTX / IARC—Group 1 - Carcinogenic to humans
EPA CTX / IARC—Group 2B - Possibly carcinogenic to humans
EPA CTX / EPA OPP—Group B2 Probable Human Carcinogen
EPA CTX / CalEPA—Known human carcinogen
EPA CTX / Genetox—Genotoxicity: positive (Ames: positive, 46 positive / 2 negative reports)
EPA CTX / Genetox—Genotoxicity: positive (Ames: positive, 46 positive / 2 negative reports)
EPA CTX / Skin-Eye—Eye Irritation: Eye Irrit. 2 (score: high)
EPA CTX / Skin-Eye—Eye Irritation: Serious eye damage/eye irritation - Category 2 (score: high)
EPA CTX / Skin-Eye—Skin Sensitization: Skin sensitization - Category 1B (score: high)
EPA CTX / Skin-Eye—Eye Irritation: Category 2A (score: high)
EPA CTX / Skin-Eye—Skin Irritation: Not classified (score: low)
EPA CTX / Skin-Eye—Skin Sensitization: Category 1 (score: high)
EPA CTX / Skin-Eye—Eye Irritation: Eye Irrit. 2 (score: high)
EPA CTX / Skin-Eye—Eye Irritation: Category 6.4A (Category 2A) (score: high)
EPA CTX / Skin-Eye—skin irritation: in vivo: Moderate or Mild Irritation (score: moderate)
EPA CTX / Skin-Eye—skin irritation: in vivo: Studies Indicate No Significant Irritation (score: low)
EPA CTX / Skin-Eye—skin sensitisation: in vivo (non-LLNA): Not likely to be sensitizing (score: low)

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 acetaldehyde

  • 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 Acetaldehyde:

  • Fragrance-free formulations
    Trade-offs: Consumer preference for scented products
    Relative cost: 1.2-2×
  • Essential oil-based fragrances (with disclosure)
    Trade-offs: Natural does not mean safe — many essential oils are skin sensitizers
    Relative cost: 2-5×

Frequently asked questions

Is acetaldehyde safe for kids?

Infants are more vulnerable to Acetaldehyde 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 acetaldehyde?

Acetaldehyde 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 acetaldehyde?

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 acetaldehyde?

Acetaldehyde has been classified by 22 agencies including IARC, US EPA, EPA CTX / NIOSH, EPA CTX / IRIS, EPA CTX / NTP RoC, 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 Acetaldehyde in the baby app

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

Open in baby View raw API data

Sources (3)
  1. IARC Monographs Volume 100E: Personal Habits and Indoor Combustions — Acetaldehyde Associated with Consumption of Alcoholic Beverages (2012) — regulatory
  2. US EPA IRIS: Acetaldehyde — Carcinogenicity Assessment (Group B2) (1991) — regulatory
  3. ATSDR Toxicological Profile for Acetaldehyde (2020) — report

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 →