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Preservative

SODIUM O-PHENYLPHENATE

CAS 132-27-4 Updated
28

Safety score · 0–100

Caution

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

About

The sodium salt of o-phenylphenol — an effective preservative, but a documented sensitizer with EU regulatory restrictions and IARC-reviewed carcinogenicity flags. Treat as red.

Function

ANTIMICROBIAL

Skin benefits

  • Antimicrobial preservative

Known concerns

  • Sensitizer / contact allergen
  • EU regulatory restrictions
  • Eye and skin irritation
  • IARC 2B (parent OPP) review history
  • Aquatic 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.