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Preservative

2-BROMO-2-NITROPROPANE-1,3-DIOL

CAS 52-51-7
28

Safety score · 0–100

Caution

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

Bronopol — a formaldehyde-releasing preservative active at low levels. EU restricts it to 0.1%; carries GHS skin, eye, and respiratory irritation hazards.

Skin benefits

  • Broad-spectrum preservation
  • Effective at low %
  • Established preservative

Known concerns

  • Releases trace formaldehyde
  • H315 skin irritation, H318 serious eye damage
  • Contact allergen — restricted by EU

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, so always read the physical product label and consult a healthcare professional for personal concerns.