Excellent Colorant

Ferric Ferrocyanide

INCI: CI 77510

CAS Number
14038-43-8
Function
Colorant; Prussian Blue pigment
Safety Rating
EXCELLENT

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status restricted
US Notes Permanently listed under 21 CFR 73.2299 (Ferric Ferrocyanide) and 21 CFR 73.2298 (Ferric Ammonium Ferrocyanide), both exempt from certification. Approved for externally applied cosmetics including eye area. NOT permitted in lip products.

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

CAS 14038-43-8. Exceptionally safe inorganic colorant with negligible dermal absorption, very high oral LD50, and no sensitization concerns. EU-approved for all cosmetic product categories. FDA permanently listed for externally applied cosmetics including eye area. Purity control (free from cyanide ions) is the critical regulatory condition of use. Not permitted in US lip products.

⚠️
Concern Level: None

Regulatory Flags

lip-excluded-us eye-area-approved purity-condition-eu no-sccs-opinion no-cir-assessment eu-ammonium-form-only

Frequently Asked Questions

Is Ferric Ferrocyanide safe in cosmetics?

CAS 14038-43-8. Exceptionally safe inorganic colorant with negligible dermal absorption, very high oral LD50, and no sensitization concerns. EU-approved for all cosmetic product categories. FDA permanently listed for externally applied cosmetics including eye area. Purity control (free from cyanide ions) is the critical regulatory condition of use. Not permitted in US lip products. The EU classifies Ferric Ferrocyanide as "permitted". Safety rating: EXCELLENT.

Is Ferric Ferrocyanide allowed in the EU?

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

What does Ferric Ferrocyanide do in cosmetics?

Ferric Ferrocyanide functions as: Colorant; Prussian Blue pigment. It is classified as a Colorant in our database. CAS number: 14038-43-8.

What is the Margin of Safety for Ferric Ferrocyanide?

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.

Compliance Tools

Check Ferric Ferrocyanide compliance across multiple jurisdictions:

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Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
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Substance Compliance
Check compliance across 55 jurisdictions
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
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Heavy Metal Limits
Compare limits across jurisdictions

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