HEXAHYDRO-METHANOINDENE-5-YLIDENE-2-BUTANOL
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A tricyclic unsaturated sesquiterpene alcohol with a methyleneidene group, used in perfumery for its woody, ambery, and slightly sweet character.
Hexahydro-methanoindene-5-ylidene-2-butanol is a complex tricyclic sesquiterpene-type alcohol with an exocyclic methyleneidene group. No CLP hazard classifications apply. It is not listed in EU cosmetic regulation Annexes. The bridged tricyclic structure (methanoindane-type) is typical of certain amber and woody fragrance materials. The methyleneidene group could theoretically contribute to sensitization, but no formal hazard statement exists. Used within IFRA limits.
References
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.