trans-5-Octenone (trans-5-Octen-2-one)

INCI: 5-OCTEN-2-ONE

CAS Number
18217-14-0
Function
Fragrance ingredient (metallic, mushroom-like, earthy, green note)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted in cosmetics as fragrance ingredient

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Lower concern than conjugated unsaturated ketones since the double bond at position 5 is remote from the carbonyl. Standard IFRA use-level guidance applies

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Concern Level: Low

Regulatory Flags

fragrance-component

Frequently Asked Questions

Is trans-5-Octenone (trans-5-Octen-2-one) safe in cosmetics?

Lower concern than conjugated unsaturated ketones since the double bond at position 5 is remote from the carbonyl. Standard IFRA use-level guidance applies The EU classifies trans-5-Octenone (trans-5-Octen-2-one) as "permitted". Safety rating: GOOD.

Is trans-5-Octenone (trans-5-Octen-2-one) allowed in the EU?

trans-5-Octenone (trans-5-Octen-2-one) EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does trans-5-Octenone (trans-5-Octen-2-one) do in cosmetics?

trans-5-Octenone (trans-5-Octen-2-one) functions as: Fragrance ingredient (metallic, mushroom-like, earthy, green note). It is classified as a cosmetic ingredient in our database. CAS number: 18217-14-0.

What is the Margin of Safety for trans-5-Octenone (trans-5-Octen-2-one)?

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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