Baby Safety / Compounds / Benzotriazole

Is Benzotriazole safe for babies and kids?

Context-dependent for kids

(Babies-specific data is limited; this page draws from human pregnant context.) Pregnancy alters the metabolism and distribution of Benzotriazole, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

What is benzotriazole?

The IUPAC name is 1H-benzotriazole.

Also known as: 1H-benzotriazole, BTA, azabenzimidazole, SDZ-62-826.

IUPAC name
1H-benzotriazole
CAS number
95-14-7
Molecular formula
C6H5N3
Molecular weight
119.12 g/mol
SMILES
CCCCCCCCCCCCCCCCCCOCC(COP(=O)(O)OCC[N+](C)(C)C)OC
PubChem CID
1393

Risk for babies

Context-dependent

Pregnancy alters the metabolism and distribution of Benzotriazole, 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.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of Benzotriazole, 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

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

AgencyYearClassificationNotes
EU_CLP—Acute Tox. 4 (Oral); Skin Sens. 1H302 (Harmful if swallowed), H317 (May cause allergic skin reaction)
EU_WFD——Priority substance concern; detected in drinking water; persistence in aquatic environments

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 benzotriazole

  • antifreeze
  • coolant systems
  • metal protection
  • industrial water systems

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Benzotriazole:

  • Organic acid-based inhibitors (e.g., sebacic acid derivatives)
    Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.
    Relative cost: 2-5× conventional
  • Silicate-based corrosion inhibitors for closed systems
    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×
  • Molybdate-based alternatives to chromate inhibitors
    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

What products contain benzotriazole?

Benzotriazole appears in: antifreeze; coolant systems; metal protection.

See Benzotriazole in the baby app

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

Open in baby View raw API data

Sources (2)
  1. PubChem Compound CID 1393 — database
  2. ATSDR Toxicological Profile — CAS 95-14-7 — reference

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 →