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METHYLOCTYL ACETALDEHYDE

CAS 19009-56-4
68

Safety score · 0–100

Fine

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

An aldehyde fragrance ingredient with fresh, citrus-green, and slightly fatty olfactory character. Used at low concentrations in fine fragrances and cosmetic products; not restricted under EU law.

Methyloctyl acetaldehyde (also called 2-methyl-decanal or methyl octyl acetaldehyde) is an aldehyde fragrance ingredient contributing fresh, citrus-green notes with a slight fatty undertone. It is not restricted under EU Regulation 1223/2009 and is considered safe for use in cosmetic products at typical fragrance use levels as guided by IFRA recommendations.

Skin benefits

  • Adds fresh, bright top notes to fragrance compositions

Known concerns

  • Aldehydes may cause skin sensitisation at elevated concentrations
  • Typical cosmetic use levels are low

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.