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Eosin

CAS 17372-87-1 · 100/100 · High conf.

Also registered as 15 other CAS numbers

548-26-5 · 15086-94-9 · 15876-39-8 · 94021-89-3 · 125399-78-2 · 1340-15-4 · 12777-83-2 · 37361-24-3 · 56588-87-5 · 84932-33-2 · 95917-83-2 · 122199-14-8 · 198831-98-0 · 528838-89-3 · 658700-91-5

Colorant · Dye

Eosin chemical structure

Concern score

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

Why it's flagged

2-(3,6-Dihydroxy-2,4,5,7-tetrabromoxanthen-9-yl)benzoic acid; Fluorescein, 2',4',5',7'-tetrabromo-;(Solvent Red 43), its disodium salt (Acid Red 87; CI 45380) and its aluminium salt (Pigment Red 90:1 Aluminium lake) when used as a substance in hair dye products is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — banned

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

Restrictions first, then routine listings from published regulatory sources.

  • EU Annex II — prohibited
  • EU Annex IV — permitted colorant
  • EU permitted colorant
  • EU prohibited in cosmetics

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Industrial
  • EUEC

    Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.

    banned
    View source →
  • EUECallowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Conditions of use and warnings: Not more than 1% 2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid and 2% 2-(bromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid
    • Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products. Conditions of use and warnings: Not more than 1% 2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid and 2% 2-(bromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acidSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 56 composition records across product categories including Laboratory supplies, Medical/dental, Personal care. EPA CPDat classifies this chemical for functional uses including Dye.
    • EPA CPDat observed this chemical in 56 composition records across product categories including Laboratory supplies, Medical/dental, Personal care. EPA CPDat classifies this chemical for functional uses including Dye.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Evidence & sources

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

6 data sources

Where this comes from

  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2013-05-07

    Open →
  • EPA Chemical and Products Database

    exposure · updated July 2016

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →
  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    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 Eosin in a product composition. These are source records, not Greenveil catalog products.

Source records

56

Named organisations

6

Laboratory suppliesMedical/dentalPersonal careCleaning and safety

Typical roles

ColorantDye
See products using Eosin

Catalog

Found in these products