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Ferric Ammonium Ferrocyanide

CAS 12240-15-2 · 100/100 · High conf.

Also registered as 2 other CAS numbers

14038-43-8 · 25869-00-5

Concern score

100/100Critical concern based on regulatory listings.
High confidence

Ferric Ammonium Ferrocyanide in plain language

What it is

On cosmetic ingredient lists it appears as “CI 77510”.

Also known as CI 77510 · Ferric ferrocyanide · Pigment blue 27 · Ferric (III) ammonium hexacyanoferrate (II) · Ferric Ammonium Ferrocyanide/Prussian blue/CI 77510 · inorganic pigment

What it does

Used in cosmetics as a colourant. CI 77510 is classed chemically as an inorganic colour (see also INCI: Ferric Ammonium Ferrocyanide).

  • Colorant
  • Colourant
Is it a concern?
Critical concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

What the listings say

Permitted, with conditions — Ferric Ammonium Ferrocyanide appears on published "allowed" regulatory lists rather than on a restriction list.

Ferric Ammonium Ferrocyanide is listed in Annex IV of the EU Cosmetics Regulation (EC) 1223/2009 (colorants allowed in cosmetic products).

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Ferric Ammonium Ferrocyanide appears in these published regulatory listings.

  • In marketed US drugs
  • EU Annex IV — permitted colorant
  • EU permitted colorant

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Industrial
  • EUCosIngActive4 entries
    • CI 77510 is classed chemically as an inorganic colour (see also INCI: Ferric Ammonium Ferrocyanide). Restriction: IV/138Source →
    • Ferric Ferrocyanide is the inorganic salt that conforms to the formula. To identify the colorant meeting the requirements for labeling purposes in the US, the INCI Name Ferric Ferrocyanide must be used. To identify the colorant allowed for use in the European Union (EU), the INCI Name CI 77510 must be used, except for hair dye products.Source →
    • Cosmetics Regulation annex IV / ref 138.Source →
    • Pigment Blue 27 is classed chemcially as an inorganic color. CI 77510Source →
  • EUECallowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Conditions of use and warnings: free from cyanide ions
    • Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Conditions of use and warnings: free from cyanide ionsSource →
  • EUEFSAEFSA opinionSafety and efficacy of a feed additive consisting of ferric (III) ammonium hexacyanoferrate (II) for ruminants (domestic and wild), calves prior the start of rumination, lambs prior the start of rumination, kids prior the start of rumination and pigs (domestic and wild) (Honeywell Specialty Chemicals Seelze GmbH) (EFSA FEEDAP)
    • Safety and efficacy of a feed additive consisting of ferric (III) ammonium hexacyanoferrate (II) for ruminants (domestic and wild), calves prior the start of rumination, lambs prior the start of rumination, kids prior the start of rumination and pigs (domestic and wild) (Honeywell Specialty Chemicals Seelze GmbH) (EFSA FEEDAP)Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 515 composition records across product categories including Electronics/small appliances, Home maintenance, Personal care. EPA CPDat classifies this chemical for functional uses including Dye, Pigment.
    • EPA CPDat observed this chemical in 515 composition records across product categories including Electronics/small appliances, Home maintenance, Personal care. EPA CPDat classifies this chemical for functional uses including Dye, Pigment.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 2 active drug products and 2 total products.
    • FDA NDC lists this ingredient in 2 active drug products and 2 total products.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

  • EFSA

    European Food Safety Authority

    • Safety and efficacy of a feed additive consisting of ferric (III) ammonium hexacyanoferrate (II) for ruminants (domestic and wild), calves prior the start of rumination, lambs prior the start of rumination, kids prior the start of rumination and pigs (domestic and wild) (Honeywell Specialty Chemicals Seelze GmbH) (EFSA FEEDAP)

      2021 · EU EFSA listing · Read the source →

Evidence & sources

No graded research studies for Ferric Ammonium Ferrocyanide yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2020-08-14

    Open →

  • EFSA OpenFoodTox

    regulatory · updated 2026-10-04

    Open →

  • EPA Chemical and Products Database

    exposure · updated September 2013

    Open →

  • FDA National Drug Code Directory

    regulatory · updated 2026-12-31

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed Ferric Ammonium Ferrocyanide in a product composition. These are source records, not Greenveil catalog products.

Source records

515

Named organisations

6

Electronics/small appliancesHome maintenancePersonal careBatteriesConstruction

Typical roles

ColorantColourant
See products using Ferric Ammonium Ferrocyanide →

Catalog

Found in these products

Their ingredient lists include Ferric Ammonium Ferrocyanide; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 163 →Find products without it →