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METHYL HYDRATROPALDEHYDE

CAS 99-72-9
65

Safety score · 0–100

Fine

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

About

Methyl Hydratropaldehyde is a cosmetic ingredient used in product formulations. Its specific function may vary between products. Exercise caution due to limited available safety data.

Methyl hydratropaldehyde (2-methyl-3-phenylpropanal) is a fragrance aldehyde with a branched structure that has been evaluated by IFRA/IRFM. The alpha-branched aldehyde structure reduces some reactivity compared to linear aldehydes, but sensitizer disclosure is required at specified concentrations. Generally safe in rinse-off products with proper IFRA compliance.

Known concerns

  • Mild fragrance allergen (IFRA disclosure threshold)
  • Aldehyde class sensitization potential
  • IFRA concentration limits apply

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.