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CIS-OCTAHYDRO-TRIMETHYL-4A-NAPHTHALENOL

CAS 57963-77-6
72

Safety score · 0–100

Fine

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

About

Cis-octahydro-trimethyl-4a-naphthalenol is a cosmetic ingredient. Exercise caution due to limited available safety data.

cis-Octahydro-trimethyl-4a-naphthalenol (CAS 57963-77-6) is a partially saturated naphthalene derivative classified as a sesquiterpene. It is used as a fragrance ingredient and flavoring agent. The IFRA Code of Practice applies to sesquiterpenes in fragrance applications. It is not specifically listed in EU Annex II or III of Regulation 1223/2009. Natural occurrence in essential oils means trace levels are present in many plant-derived cosmetic ingredients. Mild sensitisation potential reported; overall considered safe at fragrance concentrations with proper IFRA guidelines followed.

Skin benefits

  • Fragrance component
  • Provides aromatic properties to formulations

Known concerns

  • May cause skin sensitisation in susceptible individuals
  • Fragrance allergen declaration may be required above threshold
  • Limited independent safety data

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.