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2,3-DIMETHYL-4-FORMYL-1-PHENYL-5-PYRAZOLONE

CAS 950-81-2
45

Safety score · 0–100

Moderate

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

2,3-dimethyl-4-formyl-1-phenyl-5-pyrazolone is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

2,3-Dimethyl-4-Formyl-1-Phenyl-5-Pyrazolone is an aromatic heterocyclic compound bearing both aldehyde and methyl substituents on a phenylpyrazolone scaffold. Its aldehyde group is a key driver of its reactivity and irritation potential. It is not listed on any EU Annex (II–VI), indicating no specific cosmetic ban, but the GHS hazard profile (H315 skin irritation, H319 serious eye irritation, H335 respiratory irritation) combined with limited cosmetic usage history suggests caution and a relatively low safety margin in leave-on products.

Known concerns

  • GHS H315: causes skin irritation
  • GHS H319: causes serious eye irritation
  • GHS H335: may cause respiratory irritation
  • Limited safety data in cosmetic contexts

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.