Baby Safety / Compounds / Iron (metallic/ionic)

Is Iron (metallic/ionic) safe for babies and kids?

Elevated risk for kids

Infants are more vulnerable to Iron (metallic/ionic) 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 iron (metallic/ionic)?

The IUPAC name is iron.

Also known as: iron, Iron, elemental, ferrous iron, Iron powder.

IUPAC name
iron
CAS number
7439-89-6
Molecular formula
Fe
Molecular weight
55.84 g/mol
SMILES
[Fe]
PubChem CID
23925

Risk for babies

Elevated risk

Infants are more vulnerable to Iron (metallic/ionic) 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 Iron (metallic/ionic), 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

5 regulatory and scientific bodies have classified Iron (metallic/ionic). The classifications differ — that's the data.

AgencyYearClassificationNotes
IARC—Group 1
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 2 positive / 2 negative reports)
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 2 positive / 2 negative reports)
EPA CTX / Skin-Eye—skin irritation: in vivo: Studies Indicate No Significant Irritation (score: low)
EPA CTX / Skin-Eye—eye irritation: in vivo: Studies Indicate No Significant Irritation (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 iron (metallic/ionic)

  • 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 Iron (metallic/ionic):

  • Enzyme or biocatalysts where applicable
    Trade-offs: Temperature/pH sensitivity. Higher cost for some applications.
    Relative cost: 2-5×

Frequently asked questions

Is iron (metallic/ionic) safe for kids?

Infants are more vulnerable to Iron (metallic/ionic) 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 iron (metallic/ionic)?

Iron (metallic/ionic) 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 iron (metallic/ionic)?

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 iron (metallic/ionic)?

Iron (metallic/ionic) has been classified by 5 agencies including IARC, EPA CTX / Genetox, EPA CTX / Genetox, EPA CTX / Skin-Eye, 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 Iron (metallic/ionic) in the baby app

Look up products containing iron (metallic/ionic), compare to alternatives, and explore the full data record.

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Sources (4)
  1. ASPCA Animal Poison Control Center: Iron Toxicosis in Companion Animals — Dietary Supplement and Oxygen Absorber Exposure (2021) — report
  2. Talcott PA: Iron. In: Small Animal Toxicology (Peterson ME, Talcott PA, eds.) — Four-Stage Iron Toxicosis Syndrome and Treatment (2004) — report
  3. WHO: Iron — Dietary Intake, Deficiency, Toxicity, and Environmental Health Criteria (2004) — regulatory
  4. US EPA: Iron — Secondary Maximum Contaminant Level and Aquatic Life Criteria (2002) — 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 →