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PENTANEDIONE.

Avoid CAS 600-14-6 / PERFUMING

Pentanedione, encompassing isomers such as 2,4-Pentanedione (Acetylacetone) and 2,3-Pentanedione, functions primarily as a potent chelating agent by forming stable complexes with metal ions. Despite its industrial and food flavoring applications, its use in precision skincare is highly problematic due to documented skin irritancy and sensitizing potential.

chelating agent fragrance

Science

This molecule primarily functions as a chelating agent, efficiently binding and neutralizing various metal ions by forming stable complexes.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Both
Optimal pH N/A
0 7 14

Stability

The stability of Pentanedione is highly conditional. 2,4-Pentanedione exhibits high reactivity, undergoing exothermic reactions with various acids, bases, and reducing agents, while also being incompatible with strong oxidizing agents, oxygen, and certain metals. The 2,3-Pentanedione isomer demands refrigeration, light protection, and storage in tightly sealed containers, away from ignition sources, to maintain its integrity.

Conflicts

  • acids
  • strong oxidizing agents
  • oxygen
  • metals
  • bases
  • reducing agents
  • halogenated hydrocarbons

Safety

CIR Status
Not reviewed
Sensitization risk High

Pentanedione, along with its isomers 2,4-Pentanedione and 2,3-Pentanedione, has not undergone specific safety evaluations by the Cosmetic Ingredient Review (CIR) or the Scientific Committee on Consumer Safety (SCCS) for cosmetic applications. Although 2,3-Pentanedione holds a US FDA designation for limited use in food, this status does not apply to topical cosmetic formulations. 2,4-Pentanedione is classified as toxic upon skin contact and inhalation, with documented potential for mild skin irritation and, with prolonged exposure, defatting of the skin leading to dermatitis. Furthermore, 2,3-Pentanedione has been observed to cause moderate irritation in rabbit skin under occlusive conditions and is recognized as a potential skin sensitizer.


Your Skin

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

Our Assessment

Avoid

Due to significant unreviewed cosmetic safety data, confirmed skin irritancy, and potential sensitization, Pentanedione is strongly not recommended for topical skincare formulations.


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