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Moumoujus

5-NONEN-2-ONE.

Optional CAS 27039-84-5 / PERFUMING

A volatile ketone compound that serves as a perfuming agent and malodor counteractant in cosmetic formulations. This hydrophobic molecule functions primarily to enhance sensory experience by masking unpleasant odors or blocking their perception at the sensory level.

Summary

perfuming malodor counteractant

Science

Mechanism of Action

Works as a volatile benefit agent that either masks unpleasant scents through olfactory interference or prevents malodor molecules from accessing sensory cells, while undergoing keto-enol tautomerization in biological systems.

Research

Clinical Evidence

Medium confidence
Effective range ≤0.2%
Optimal

0.2%

Key findings

  1. 01 Maximum safe usage level in fragrance concentrates established by IFRA standards without significant sensitization risk

Transparency

Dusting Analysis

Not commonly dusted

Used at regulated concentrations up to 0.2% as a functional fragrance ingredient rather than being inflated for marketing purposes

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Demonstrates high hydrophobicity with excellent solubility in alcohols and lipid systems, while remaining practically water-insoluble and stable in oil-based formulations

Conflicts

  • Oxidizing agents
  • Vitamin A derivatives

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.2%
Sensitization risk Low

Regulated under IFRA/RIFM fragrance standards with established safety limits and no specific GHS skin hazard classifications at standard usage concentrations

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Optional

A specialized fragrance ingredient with established safety limits that enhances product sensory experience but provides no direct skin benefits.

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References

Sources