2-UNDECENENITRILE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
2-UNDECENENITRILE is a cosmetic ingredient used in product formulation. Exercise caution due to limited available safety data.
2-Undecenenitrile is an unsaturated aliphatic nitrile functioning as a fragrance ingredient with a powerful citrus, violet, and fatty odor profile. Nitriles in perfumery often provide substantivity and strength that can surpass corresponding aldehydes. It is not listed in EU Annexes II or III. The nitrile functional group raises theoretical concerns due to its reactivity, but nitriles used as fragrance ingredients have been extensively evaluated by IFRA and found safe at typical use concentrations. The double bond introduces mild oxidative instability concerns similar to other unsaturated fragrance materials.
Skin benefits
- Provides powerful, long-lasting fragrance character
- Contributes citrus and violet notes to perfume compositions
Known concerns
- Mild oxidative instability from unsaturated bond
- Limited independent toxicological assessment
- Theoretical nitrile reactivity concerns at high concentrations
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.