Baby Safety / Compounds / Antimony

Is Antimony safe for babies and kids?

Moderate risk for kids

Infants are extremely vulnerable to Antimony due to immature blood-brain barrier, higher gastrointestinal absorption rates (40-50% vs 3-10% in adults), and rapidly developing neurology. Even trace exposure can cause irreversible neurodevelopmental harm.

What is antimony?

Also known as: Stibium, Stibium metallicum, Antimony powder, Antimony metal.

IUPAC name
antimony
CAS number
7440-36-0
Molecular formula
Sb
Molecular weight
121.76 g/mol
SMILES
[Sb]
PubChem CID
5354495

Risk for babies

Moderate risk

Infants are extremely vulnerable to Antimony due to immature blood-brain barrier, higher gastrointestinal absorption rates (40-50% vs 3-10% in adults), and rapidly developing neurology. Even trace exposure can cause irreversible neurodevelopmental harm.

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

High risk

Pregnancy increases vulnerability to Antimony. Heavy metals cross the placenta, accumulate in fetal tissue, and interfere with neurodevelopment. Maternal bone resorption during pregnancy mobilizes stored metals.

Known reproductive toxicant (GHS H360) or confirmed endocrine disruptor. Placental transfer is presumed. Fetal exposure during critical developmental windows may cause structural malformations, growth restriction, or functional deficits.

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

Regulatory consensus

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

AgencyYearClassificationNotes
IARC—Group 2
IARC—Group 3
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 1 positive / 9 negative reports)
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 1 positive / 9 negative reports)
EPA CTX / Skin-Eye—Eye Irritation: Category 6.4A (Category 2A) (score: high)
EPA CTX / Skin-Eye—Skin Irritation: Category 6.3B (Category 3) (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 antimony

  • 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 Antimony:

  • Phosphate-free corrosion inhibitors (molybdate, silicate)
    Trade-offs: Higher cost. May be less effective in some aggressive environments.
    Relative cost: Lower (ingredient elimination)

Frequently asked questions

Is antimony safe for kids?

Infants are extremely vulnerable to Antimony due to immature blood-brain barrier, higher gastrointestinal absorption rates (40-50% vs 3-10% in adults), and rapidly developing neurology. Even trace exposure can cause irreversible neurodevelopmental harm.

What products contain antimony?

Antimony 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 antimony?

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 antimony?

Antimony has been classified by 6 agencies including IARC, IARC, EPA CTX / Genetox, EPA CTX / Genetox, EPA CTX / Skin-Eye, 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 Antimony in the baby app

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

Open in baby View raw API data

Sources (2)
  1. ATSDR: Toxicological Profile for Antimony — Trivalent vs Pentavalent Toxicity, Occupational Lung Disease, IARC 2B Context, and Flame Retardant Use (2019) — regulatory
  2. US EPA IRIS: Antimony (III) — Oral Reference Dose, Drinking Water MCL (6 ppb), Blood Cholesterol/Glucose Endpoint, and Inhalation Reference Concentration (1992) — 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 →