Trimethylnorbornan-2-one (Fenchone)

INCI: FENCHONE (COMMONLY); REGISTERED AS TRIMETHYLNORBORNAN-2-ONE IN SOME DATABASES

CAS Number
4695-62-9 (d-fenchone) / 7787-20-4 (dl-fenchone)
Function
Perfuming / denaturant
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes GRAS as flavoring agent; permitted in cosmetics as fragrance

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Monoterpene ketone; neurotoxic potential at very high oral doses (not relevant at cosmetic concentrations); natural component of fennel, sage, and thuja essential oils

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Concern Level: Moderate

Regulatory Flags

essential-oil fragrance-component natural-origin

Frequently Asked Questions

Is Trimethylnorbornan-2-one (Fenchone) safe in cosmetics?

Monoterpene ketone; neurotoxic potential at very high oral doses (not relevant at cosmetic concentrations); natural component of fennel, sage, and thuja essential oils The EU classifies Trimethylnorbornan-2-one (Fenchone) as "permitted". Safety rating: GOOD.

Is Trimethylnorbornan-2-one (Fenchone) allowed in the EU?

Trimethylnorbornan-2-one (Fenchone) EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Trimethylnorbornan-2-one (Fenchone) do in cosmetics?

Trimethylnorbornan-2-one (Fenchone) functions as: Perfuming / denaturant. It is classified as a cosmetic ingredient in our database. CAS number: 4695-62-9 (d-fenchone) / 7787-20-4 (dl-fenchone).

What is the Margin of Safety for Trimethylnorbornan-2-one (Fenchone)?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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