Potassium Undecylenate

INCI: POTASSIUM UNDECYLENATE

CAS Number
6159-41-7
Function
Preservative (antimicrobial); Surfactant - Cleansing; Emulsifying
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
EU Max Conc. 0.2%
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Related salts (calcium, zinc undecylenate) are FDA-approved OTC antifungal actives; potassium salt permitted in cosmetics

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

Strict concentration cap at 0.2% (as acid) under EU Annex V. Unsaturated C=C bond may oxidize over time, requiring stability monitoring. Ensure proper pH range for preservative efficacy.

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Concern Level: Low

Regulatory Flags

preservative

Frequently Asked Questions

Is Potassium Undecylenate safe in cosmetics?

Strict concentration cap at 0.2% (as acid) under EU Annex V. Unsaturated C=C bond may oxidize over time, requiring stability monitoring. Ensure proper pH range for preservative efficacy. The EU classifies Potassium Undecylenate as "permitted". Safety rating: GOOD.

Is Potassium Undecylenate allowed in the EU?

Potassium Undecylenate EU regulatory status: permitted. Maximum allowed concentration: 0.2%. This is based on EU Regulation 1223/2009 and its amendments.

What does Potassium Undecylenate do in cosmetics?

Potassium Undecylenate functions as: Preservative (antimicrobial); Surfactant - Cleansing; Emulsifying. It is classified as a cosmetic ingredient in our database. CAS number: 6159-41-7.

What is the Margin of Safety for Potassium Undecylenate?

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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