Cyclohexyl‑4‑Methylpentan‑2‑One

INCI: CYCLOHEXYL-4-METHYLPENTAN-2-ONE

CAS Number
Not clearly identified in open RIFM/SCCS summaries; may correspond to a proprietary perfumery ketone (similar to “Iso Cyclemone E” family).
Function
Fragrance ingredient (alicyclic ketone) used for odor notes in fine fragrance and cosmetic products
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes No specific FDA cosmetic prohibition; governed by general safety requirement and OSHA hazard classification

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

Fragrance ketone with potential for eye irritation and transient sensory irritation; inhalation exposure evaluation recommended for aerosol and spray products.

⚠️
Concern Level: Low

Regulatory Flags

fragrance-component

Frequently Asked Questions

Is Cyclohexyl‑4‑Methylpentan‑2‑One safe in cosmetics?

Fragrance ketone with potential for eye irritation and transient sensory irritation; inhalation exposure evaluation recommended for aerosol and spray products. The EU classifies Cyclohexyl‑4‑Methylpentan‑2‑One as "permitted". Safety rating: GOOD.

Is Cyclohexyl‑4‑Methylpentan‑2‑One allowed in the EU?

Cyclohexyl‑4‑Methylpentan‑2‑One EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Cyclohexyl‑4‑Methylpentan‑2‑One do in cosmetics?

Cyclohexyl‑4‑Methylpentan‑2‑One functions as: Fragrance ingredient (alicyclic ketone) used for odor notes in fine fragrance and cosmetic products. It is classified as a cosmetic ingredient in our database. CAS number: Not clearly identified in open RIFM/SCCS summaries; may correspond to a proprietary perfumery ketone (similar to “Iso Cyclemone E” family)..

What is the Margin of Safety for Cyclohexyl‑4‑Methylpentan‑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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