Skip to main content
CosIng Checker
CosIng Checker
EU cosmetic ingredients, restrictions and safety
Login
CAS 1 record

CAS 15905-32-5

CAS 15905-32-5 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

Check this CAS numberBrowse annexes

Chemical identity and properties

PubChem 2D chemical structure for CAS 15905-32-5
CAS 15905-32-5PubChem CID 3259

Erythrosine

Fd&c red no. 3 is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]").<br /> Fd&c red no. 3 belongs to the family of Xanthenes. These are polycyclic aromatic compounds containing a xanthene moiety, which consists of two benzene ring joined to each other by a pyran ring. — Toxin and Toxin Target Database (T3DB)

IUPAC name
3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one
Molecular formula
C20H8I4O5
Molecular weight
835.9 g/mol
Exact mass
835.6551 Da
XLogP3
6.0
Topological polar surface area
76.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

E127FD & C red no. 33',6'-dihydroxy-2',4',5',7'-tetraiodospiro(2-benzofuran-3,9'-xanthene)-1-oneFDC Red No. 3RefChem:591122Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 3',6'-dihydroxy-2',4',5',7'-tetraiodo-, disodium saltErythrosine, sodium anhydrousNSC-36685
16 more reported names
Erythrosin BTetraiodofluoresceinSolvent Red 140IodeosinErythrosine acidErythrosine, phenolic2',4',5',7'-Tetraiodofluorescein2,4,5,7-ErythrosinC.I. Solvent Red 140Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3',6'-dihydroxy-2',4',5',7'-tetraiodo-Erythrosine B (free acid)1A878FZQ9BNSC-328781Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 3',6'-dihydroxy-2',4',5',7'-tetraiodo-C.I. Food Red 14FD and C Red No. 3
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 15905-32-5

1 total
No records found for this CAS number.

How CAS 15905-32-5 is used on this site

CAS 15905-32-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 15905-32-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.