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Moumoujus

POTASSIUM O-PHENYLPHENATE.

Avoid CAS 13707-65-8 / ANTIMICROBIAL

Potassium o-Phenylphenate is a salt derived from o-Phenylphenol, historically recognized for its fungicidal and disinfectant properties. While previously utilized as a cosmetic preservative, it is now prohibited in the European Union due to its corrosive nature and identified health risks.

Summary

Preservative (prohibited in cosmetics) Fungicide Disinfectant Antimicrobial

Science

Mechanism of Action

This compound primarily functions as a preservative by inhibiting microbial proliferation, specifically acting as a fungicide and disinfectant. Direct cutaneous application has been documented to induce a corrosive effect on the skin.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As this ingredient is prohibited for use in cosmetic products due to its corrosive nature and associated safety concerns, the concept of 'dusting' for skin efficacy is not applicable.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Potassium o-Phenylphenate exhibits high water solubility and dissociates readily in aqueous environments, consistent with its nature as a salt of a weak acid (o-Phenylphenol, pKa 9.5). An optimal pH range for its stability in cosmetic formulations has not been specified.

Conflicts

  • Corrosive nature renders it unsuitable for cosmetic formulations
  • Prohibited for use in cosmetic products within the EU

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0%
Sensitization risk High

The Scientific Committee on Consumer Safety (SCCS) concluded that a potential risk to human health from Potassium o-Phenylphenate's use in cosmetics could not be excluded, citing a lack of relevant data. It is specifically identified as corrosive to the skin. Consequently, the European Commission, through amendment EU No 2018/1847, officially banned Potassium o-Phenylphenate and related compounds (Sodium o-Phenylphenate, MEA o-Phenylphenate) as cosmetic preservatives. This prohibition became effective for placing products on the market from June 17, 2019.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Potassium o-Phenylphenate is corrosive, carries significant unquantified health risks, and its use is strictly prohibited in cosmetic products within the EU.

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