TETRAMETHYLNONA-6,8-DIEN-3-ONE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
TETRAMETHYLNONA-6,8-DIEN-3-ONE is a cosmetic ingredient used in product formulation. Exercise caution due to limited available safety data.
Tetramethylnona-6,8-dien-3-one is a C13 polyunsaturated ketone featuring a tetramethyl-substituted nonadiene chain attached to a methyl ketone. The conjugated diene system and ketone group create a highly reactive Michael acceptor structural alert. The H412 classification indicates environmental concern. The carbonyl conjugation with the diene may contribute to skin sensitization potential, though the exact hazard profile of this specific compound is not fully established. Its use in cosmetics should be limited and accompanied by proper environmental risk assessment.
Skin benefits
- Complex polyunsaturated ketone fragrance
Known concerns
- H412 aquatic toxicity - environmental concern
- Michael acceptor structural alert
- Limited specific sensitization data
- Formulation requires antioxidant protection
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.