Methyl Cyclopentylideneacetate

INCI: METHYL CYCLOPENTYLIDENEACETATE

CAS Number
40203-73-4
Function
Fragrance (perfuming); also used in flavor and fragrance compounding
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Allowed - not listed as prohibited or restricted. Subject to general FEMA/GRAS standards in flavor use.

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Limited public toxicological monographs. Standard fragrance ester precautions apply; may cause skin irritation at elevated concentrations.. Molecular formula C₈H₁₂O₂; unsaturated cyclopentane ester with a fruity/floral scent; used as a building block in specialty fragrances and polymer chemistry.

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Concern Level: High

Regulatory Flags

fragrance-component ifra_fragrance

Frequently Asked Questions

Is Methyl Cyclopentylideneacetate safe in cosmetics?

Limited public toxicological monographs. Standard fragrance ester precautions apply; may cause skin irritation at elevated concentrations.. Molecular formula C₈H₁₂O₂; unsaturated cyclopentane ester with a fruity/floral scent; used as a building block in specialty fragrances and polymer chemistry. The EU classifies Methyl Cyclopentylideneacetate as "permitted". Safety rating: MODERATE.

Is Methyl Cyclopentylideneacetate allowed in the EU?

Methyl Cyclopentylideneacetate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Methyl Cyclopentylideneacetate do in cosmetics?

Methyl Cyclopentylideneacetate functions as: Fragrance (perfuming); also used in flavor and fragrance compounding. It is classified as a cosmetic ingredient in our database. CAS number: 40203-73-4.

What is the Margin of Safety for Methyl Cyclopentylideneacetate?

not established 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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