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METHYL ACETOACETATE.

Questionable CAS 105-45-3 / PERFUMING

Methyl Acetoacetate primarily serves as a chemical intermediate, solvent, and fragrance component in various applications. While it exhibits potential for skin absorption, current research does not indicate any direct beneficial mechanisms for skin health or specific skincare effects.

solvent fragrance ingredient

Science

This compound functions fundamentally as a chemical intermediate, a solvent, and a fragrance ingredient. While it exhibits potential for skin absorption and subsequent metabolism, current research indicates no direct mechanism of action that confers specific beneficial effects on the skin.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

Methyl Acetoacetate is utilized for its solvent and fragrance properties, not for direct skin benefits requiring a specific 'dusted' application or concentration for efficacy.


The Formula

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Methyl Acetoacetate is a stable liquid. However, it is not stable in the presence of strong aqueous bases or strong aqueous acids, undergoing hydrolysis to acetoacetic acid and methanol. Heating to decomposition emits acrid smoke and irritating fumes.

Conflicts

  • strong aqueous bases
  • strong aqueous acids

Safety

CIR Status
Not reviewed
Max tested
100%
Sensitization risk Low

The Research Institute for Fragrance Materials (RIFM) has concluded no safety concern for skin sensitization up to a maximum tested concentration of 100% in a murine Local Lymph Node Assay. However, liquid contact may cause smarting and reddening, and vapors are moderately irritating to skin and eyes. It is potentially skin-absorbable.


Your Skin

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

Our Assessment

Questionable

Given the absence of identified beneficial skincare mechanisms and its moderate irritancy potential, Methyl Acetoacetate's inclusion in precision skincare primarily as a solvent or fragrance requires careful evaluation against alternative ingredients.


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