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Undecane
Undecane
Moderate concern
Undecane is a low-toxicity hydrocarbon at typical use levels but is not a recognized food additive in most jurisdictions. Cosmetic use is considered safe per CIR review.
Found in
6 products
What it is
A linear C11 alkane hydrocarbon (CH3(CH2)9CH3); colorless liquid used as a solvent and flavor compound.
Trace flavor compound; used in cosmetics as a volatile silicone replacement and in fragrance.
Why it's flagged
- aspiration hazard (liquid hydrocarbon)
- skin defatting at high concentration
What regulators actually say
"Undecane is a straight-chain alkane with eleven carbon atoms used as a solvent and reference compound."
Regulatory status
United States — FDA
Not a recognized food additive; FEMA evaluated trace flavoring substance.
European Union — EFSA
Listed as flavoring substance FL-no 01.072 in EU flavoring database.
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