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Banned Substance

Sodium azide

CAS 26628-22-8 Updated
3

Safety score · 0–100

Avoid

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A highly toxic inorganic salt used as a laboratory preservative; never appropriate in cosmetics. Listed in EU Annex II — prohibited from cosmetic products. Acute oral toxicity is severe and contact with acids generates poisonous hydrazoic acid.

Skin benefits

  • No legitimate cosmetic function — laboratory preservative only

Known concerns

  • Acute oral toxicity (GHS H300) — fatal if swallowed
  • EU Annex II prohibited
  • Generates toxic hydrazoic acid in acidic conditions
  • Severe environmental toxicity

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.