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CAS 2 records

CAS 518-47-8

CAS 518-47-8 matches 2 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 518-47-8
CAS 518-47-8PubChem CID 10608

Sodium Fluorescein

Fluorescein, disodium salt is an orange-red to dark red powder. Water-soluble form of fluorescein. Odorless and almost tasteless. pH (5% solution) 7.8. May be sensitive to prolonged exposure to light and to heat. — CAMEO Chemicals

IUPAC name
disodium;2-(3-oxido-6-oxoxanthen-9-yl)benzoate
Molecular formula
C20H10Na2O5
Molecular weight
376.3 g/mol
Exact mass
376.03236198 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

Fluorescein disodium saltSoluble fluoresceinUraninUranine WSSResorcinol phthalein sodiumUranine YellowAk-FluorFluorescein, soluble
16 more reported names
Ki202Sodium fluoresceinateFluoresceinum natricum93X55PE38XD&C Yellow No. 8Funduscein-25Ki202(1)Ki202(2)D & C Yellow no. 8disodium 2-(6-oxido-3-oxo-3H-xanthen-9-yl)benzoateCI 45350CI 45350 (Na salt)3',6'-Dihydroxyspiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, disodium saltRetinofluorGlostripsBioglo
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 518-47-8

2 total
No records found for this CAS number.

How CAS 518-47-8 is used on this site

CAS 518-47-8 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 2 EU annex records share 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 518-47-8 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.