CIS-3,5,5-TRIMETHYLCYCLOHEXANOL
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A branched cycloaliphatic alcohol with skin irritation (H315), eye irritation (H319), and aquatic toxicity (H412) warnings. Requires careful formulation to avoid irritation and environmental concerns.
Cis-3,5,5-trimethylcyclohexanol (also called isononanol or trimethylcyclohexanol) is a branched cycloaliphatic alcohol used as a fragrance ingredient and solvent. The triple hazard classification (H315 skin irritation, H319 eye irritation, H412 aquatic toxicity) means it must be used at low concentrations in formulations specifically designed to minimise skin and eye contact. EU Annex listing is not applicable, but product formulators must manage the exposure risk.
Skin benefits
- Functions as a fragrance ingredient and solvent
Known concerns
- Skin irritation hazard (H315)
- Eye irritation hazard (H319)
- Aquatic toxicity hazard (H412) requiring environmental risk assessment
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.