Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CI 45380 / ACID RED 87
Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments appears in Annex IV as a positive-list colorant entry for EU cosmetics.
Chemical identity and properties

2',4',5',7'-Tetrabromofluorescein
Bromoeosin is an organobromine compound. It is functionally related to a fluorescein (lactone form). — ChEBI
- IUPAC name
- 2',4',5',7'-tetrabromo-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
- Molecular formula
- C20H8Br4O5
- Molecular weight
- 647.9 g/mol
- Exact mass
- 647.70642 Da
- XLogP3
- 6.2
- Topological polar surface area
- 76.0 Ų
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 5
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:39078
- ChEMBL:CHEMBL408917
- EPA DTXSID:DTXSID3044590
- PubMed:18636704
- PubMed:12884026
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Eosin
Eosin YS dye is an organic sodium salt that is 2',4',5',7'-tetrabromofluorescein in which the carboxy group and the phenolic hydroxy group have been deprotonated and the resulting charge is neutralised by two sodium ions. It has a role as a fluorochrome and a histological dye. It is an organobromine compound and an organic sodium salt. It contains a 2',4',5',7'-tetrabromofluorescein(2-). — ChEBI
- IUPAC name
- disodium;2-(2,4,5,7-tetrabromo-3-oxido-6-oxoxanthen-9-yl)benzoate
- Molecular formula
- C20H6Br4Na2O5
- Molecular weight
- 691.9 g/mol
- Exact mass
- 691.67031 Da
- Topological polar surface area
- 89.5 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 5
- Covalent units
- 3
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:52053
- ChEMBL:CHEMBL411675
- EPA DTXSID:DTXSID901015574
- PubMed:33352258
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoic acid, zirconium salt
- IUPAC name
- tetrakis(2-(2,4,5,7-tetrabromo-3,6-dihydroxy-9H-xanthen-9-yl)benzoate);zirconium(4+)
- Molecular formula
- C80H36Br16O20Zr
- Molecular weight
- 2686.8 g/mol
- Exact mass
- 2684.7617 Da
- Topological polar surface area
- 359.0 Ų
- Hydrogen-bond donors
- 8
- Hydrogen-bond acceptors
- 20
- Covalent units
- 5
- Defined stereocentres
- 0
Also known as
External database identifiers
- EPA DTXSID:DTXSID50240252
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Record details
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
Colour index or glossary
CI 45380 / ACID RED 87
Chemical name
Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
Chemical / IUPAC name
Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
Color
Red
Regulatory information
Identified ingredients
Key data
Inventory links for Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
CI 45380
PIGMENT RED 90:1 ALUMINUM LAKE
Related records for Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
Direct matches are limited for this record, so nearby entries from Annex IV are shown as well.
2-(3,6-Dihydroxy-2,4,5,7-tetrabromoxanthen-9-yl)benzoic acid; Fluorescein, 2',4',5',7'-tetrabromo-;…
CI 45370
CI 47000 / SOLVENT YELLOW 33
What Annex IV means for Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments is an approved colorant listed in Annex IV of EU Cosmetics Regulation 1223/2009. Only colorants on this positive list may be used to colour cosmetic products on the EU market.
Some colorants in Annex IV are restricted by product type — for example, prohibited from use around the eyes or in products applied to mucous membranes. Check the product type and conditions fields above before use.
This record is linked to 3 CosIng inventory ingredients for name and identifier cross-reference. The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.
Compliance checklist
- Confirm colorant is used only in permitted product types listed above.
- Record the Colour Index number and CAS identifier in the ingredient declaration.
Frequently asked questions
Source note for Annex IV record Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments
This page summarizes one Annex IV record for Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.
Use this record page to review Annex IV conditions for Disodium 2-(2,4,5,7-tetrabromo-6-oxido-3-oxoxanthen-9-yl)benzoate and its insoluble barium, strontium and zirconium lakes, salts and pigments, but confirm any final regulatory decision against the current official annex wording and source files.
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