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Preservative

CALCIUM BENZOATE

CAS 2090-05-3 Updated
78

Safety score · 0–100

Fine

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

About

The calcium salt of benzoic acid, used as a mild preservative. Listed in EU Annex V/1a with strong food-grade safety; the only real caveat is benzene formation if mixed with vitamin C and light.

Function

PRESERVATIVE

Skin benefits

  • Mild antimicrobial preservative
  • EU Annex V/1a listed
  • Long food-grade safety record
  • Calcium contributes mild buffering

Known concerns

  • Rare contact dermatitis in sensitized users
  • Effective only in slightly acidic formulations
  • With ascorbic acid + light could form trace benzene — formulation control matters

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.