Dequalinium Chloride

INCI: DEQUALINIUM CHLORIDE

CAS Number
522-51-0
Function
Antimicrobial / preservative (quaternary ammonium compound)
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” not prohibited under 21 CFR; FDA recognizes as pharmaceutical active (UNII: XYS8INN1I6)

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
moderate
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Causes skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335); pharmaceutical classification risk with concentration-dependent irritation profile; no formal cosmetic safety assessment by SCCS or CIR.

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Concern Level: Moderate

Regulatory Flags

preservative

Frequently Asked Questions

Is Dequalinium Chloride safe in cosmetics?

Causes skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335); pharmaceutical classification risk with concentration-dependent irritation profile; no formal cosmetic safety assessment by SCCS or CIR. The EU classifies Dequalinium Chloride as "permitted". Safety rating: MODERATE.

Is Dequalinium Chloride allowed in the EU?

Dequalinium Chloride EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Dequalinium Chloride do in cosmetics?

Dequalinium Chloride functions as: Antimicrobial / preservative (quaternary ammonium compound). It is classified as a cosmetic ingredient in our database. CAS number: 522-51-0.

What is the Margin of Safety for Dequalinium Chloride?

not established 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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