Fluorescein Sodium

Name: Fluorescein Sodium
Brand: Vaqora Chemicals
SKU: VQ-004237

About Fluorescein Sodium

Fluorescein Sodium (CAS 518-47-8) is an active pharmaceutical ingredient offered by Vaqora Chemicals in IP/BP/USP grade. Formula C20H10Na2O5, molecular weight 376.3 g/mol. The IUPAC name is disodium, 2-(3-oxido-6-oxoxanthen-9-yl)benzoate. Alternative names: Fluorescein disodium salt and Soluble fluorescein.

It is supplied as a powder. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

This API belongs to our vitamins, excipients and other APIs portfolio and is supplied to IP/BP/USP specifications for formulators, contract manufacturers and generic drug developers. Buyers come mainly from pharmaceutical manufacturing.

Vaqora Chemicals supplies Fluorescein Sodium in 1 kg, 5 kg and 25 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Pharmaceutical formulation
Generic drug development
Nutraceutical & excipient use
Diagnostic assays

Industries

Related to Fluorescein

View every impurity, metabolite and intermediate we list for Fluorescein.

Fluorescein impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Fluorescein Sodium
Catalogue No.	VQ-004237
CAS Number	518-47-8
IUPAC name	disodium;2-(3-oxido-6-oxoxanthen-9-yl)benzoate
Molecular formula	C₂₀H₁₀Na₂O₅
Molecular weight	376.3 g/mol
Exact mass	376.0324
Grade	IP/BP/USP
InChIKey	NJDNXYGOVLYJHP-UHFFFAOYSA-L
SMILES	C1=CC=C(C(=C1)C2=C3C=CC(=O)C=C3OC4=C2C=CC(=C4)[O-])C(=O)[O-].[Na+].[Na+]
PubChem CID	10608

Physical properties
Physical form	Powder
H-bond donors / acceptors	0 / 5
TPSA	89.5 Å²
Synonyms	Fluorescein disodium salt, Soluble fluorescein, Sodium fluorescein, Uranin, Uranine WSS, Resorcinol phthalein sodium, Uranine Yellow, Ak-Fluor, Fluorescein, soluble, Sodium fluoresceinate, Fluoresceinum natricum, D&C Yellow No. 8

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary statements: P264, P264 + P265, P280, P302 + P352, P305 + P351 + P338, P321, P332 + P317, P337 + P317, P362 + P364

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 518-47-8

Fluoresceine sodium, indicator

CAS: 518-47-8
Formula: C₂₀H₁₀Na₂O₅
MW: 376.3 g/mol

VQ-000589

Frequently asked questions

What is the CAS number of Fluorescein Sodium?

The CAS Registry Number of Fluorescein Sodium is 518-47-8. It is also known as Fluorescein disodium salt, Soluble fluorescein, Sodium fluorescein.

What is the molecular formula and molecular weight of Fluorescein Sodium?

Fluorescein Sodium has the molecular formula C20H10Na2O5 and a molecular weight of 376.3 g/mol.

What is Fluorescein Sodium used for?

Fluorescein Sodium is supplied as a characterised reference material related to Fluorescein. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Fluorescein Sodium can I order?

We supply Fluorescein Sodium in IP/BP/USP grade, in 1 kg, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Fluorescein Sodium?

Yes. Every lot of Fluorescein Sodium is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Fluorescein Sodium be shipped internationally?

Yes. Fluorescein Sodium is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.