Gold Chloride HCl

INCI: GOLD CHLORIDE HCL

CAS Number
16903-35-8 (chloroauric acid / HAuCl₄)
Function
Skin conditioning
Safety Rating
POOR

Regulatory Status

🇪🇺 EU Status prohibited
🇺🇸 US Status permitted
US Notes Permitted — no specific CFR restriction for cosmetic use

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Strongly acidic and corrosive at higher concentrations with known skin and eye irritant properties; gold ion release presents sensitization risk; requires very low concentrations with pH control and robust irritation and sensitization testing for CPSR.

⚠️
Concern Level: High

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Gold Chloride HCl safe in cosmetics?

Strongly acidic and corrosive at higher concentrations with known skin and eye irritant properties; gold ion release presents sensitization risk; requires very low concentrations with pH control and robust irritation and sensitization testing for CPSR. The EU classifies Gold Chloride HCl as "prohibited". Safety rating: POOR.

Is Gold Chloride HCl allowed in the EU?

Gold Chloride HCl EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Gold Chloride HCl do in cosmetics?

Gold Chloride HCl functions as: Skin conditioning. It is classified as a cosmetic ingredient in our database. CAS number: 16903-35-8 (chloroauric acid / HAuCl₄).

What is the Margin of Safety for Gold Chloride HCl?

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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