Baby Safety / Compounds / 2,4-D (2,4-Dichlorophenoxyacetic acid)

Is 2,4-D (2,4-Dichlorophenoxyacetic acid) safe for babies and kids?

Elevated risk for kids

(Babies-specific data is limited; this page draws from human pregnant context.) Prenatal exposure to 2,4-D (2,4-Dichlorophenoxyacetic acid) is a concern due to potential endocrine disruption and developmental toxicity. Agricultural communities show higher gestational exposure through drinking water.

What is 2,4-d (2,4-dichlorophenoxyacetic acid)?

The IUPAC name is 2-(2,4-dichlorophenoxy)acetic acid.

Also known as: 2-(2,4-dichlorophenoxy)acetic acid, 2,4-dichlorophenoxyacetic acid, 2,4-D, (2,4-Dichlorophenoxy)acetic acid.

IUPAC name
2-(2,4-dichlorophenoxy)acetic acid
CAS number
94-75-7
Molecular formula
C8H6Cl2O3
Molecular weight
221.03 g/mol
SMILES
C1=CC(=C(C=C1Cl)Cl)OCC(=O)O
PubChem CID
1486

Risk for babies

Elevated risk

Prenatal exposure to 2,4-D (2,4-Dichlorophenoxyacetic acid) is a concern due to potential endocrine disruption and developmental toxicity. Agricultural communities show higher gestational exposure through drinking water.

Suspected reproductive toxicant (GHS H361) or suspected endocrine disruptor. Precautionary approach warranted. Animal studies or limited human data suggest developmental toxicity potential.

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

Elevated risk

Prenatal exposure to 2,4-D (2,4-Dichlorophenoxyacetic acid) is a concern due to potential endocrine disruption and developmental toxicity. Agricultural communities show higher gestational exposure through drinking water.

Suspected reproductive toxicant (GHS H361) or suspected endocrine disruptor. Precautionary approach warranted. Animal studies or limited human data suggest developmental toxicity potential.

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

Regulatory consensus

15 regulatory and scientific bodies have classified 2,4-D (2,4-Dichlorophenoxyacetic acid). The classifications differ — that's the data.

AgencyYearClassificationNotes
IARC2015Group 2BIARC Group 2B for 2,4-D, evaluated in Monograph 113 (2015) alongside glyphosate (2A) and other agricultural herbicides. The classification is based on limited evidence of carcinogenicity in humans (associations with non-Hodgkin lymphoma in some epidemiological studies, particularly among farmers and agricultural workers) and sufficient evidence in experimental animals (malignant lymphomas in mice in some studies). Note: US EPA classifies 2,4-D as 'not classifiable as to human carcinogenicity' (Group D) based on different evaluation criteria; the IARC and EPA assessments differ. The discordance reflects differing weight-of-evidence approaches: IARC's Group 2B classification for 2,4-D is considered by some regulatory scientists to overweight animal evidence relative to human epidemiological data.
EPA CTX / IARC—Group 2B - Possibly carcinogenic to humans
EPA CTX / EPA OPP—Group D Not Classifiable as to Human Carcinogenicity
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 8 positive / 8 negative reports)
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 8 positive / 8 negative reports)
EPA CTX / Skin-Eye—Eye Irritation: Eye Dam. 1 (score: very high)
EPA CTX / Skin-Eye—Skin Sensitization: Skin Sens. 1 (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: Not classified (score: low)
EPA CTX / Skin-Eye—Eye Irritation: Eye Dam. 1 (score: very high)
EPA CTX / Skin-Eye—Skin Sensitization: Skin Sens. 1 (score: high)
EPA CTX / Skin-Eye—Eye Irritation: Category 6.4A (Category 2A) (score: high)
EPA CTX / Skin-Eye—Skin Irritation: Category 6.3A (Category 2) (score: high)
EPA CTX / Skin-Eye—Skin Sensitization: Category 6.5B (Category 1) (score: moderate)

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 2,4-d (2,4-dichlorophenoxyacetic acid)

  • 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 2,4-D (2,4-Dichlorophenoxyacetic acid):

  • Physical/mechanical pest control (IPM)
    Trade-offs: More labor-intensive. May not be sufficient for severe infestations.
    Relative cost: Variable; lower long-term

Frequently asked questions

What products contain 2,4-d (2,4-dichlorophenoxyacetic acid)?

2,4-D (2,4-Dichlorophenoxyacetic acid) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

Why do regulators disagree about 2,4-d (2,4-dichlorophenoxyacetic acid)?

2,4-D (2,4-Dichlorophenoxyacetic acid) has been classified by 15 agencies including IARC, EPA CTX / IARC, EPA CTX / EPA OPP, 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 2,4-D (2,4-Dichlorophenoxyacetic acid) in the baby app

Look up products containing 2,4-d (2,4-dichlorophenoxyacetic acid), compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)
  1. IARC Monographs Volume 113: Some Organophosphate Insecticides and Herbicides — 2,4-D Group 2B Classification, NHL Epidemiology, Glyphosate Group 2A, and Agricultural Worker Cohort Studies (2015) (2015) — regulatory
  2. US EPA: 2,4-D Registration Review (2005/2012) — Group D Carcinogenicity Classification, Dietary Residue Tolerances, Lawn Re-Entry Exposure Assessment, and Aquatic Life Risk Assessment (2012) — 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 →