Fluoresceine sodium, indicator

Name: Fluoresceine sodium, indicator
Brand: Vaqora Chemicals
SKU: VQ-000589

About Fluoresceine sodium, indicator

Listed under CAS 518-47-8, Fluoresceine sodium, indicator is a biological stain available from Vaqora Chemicals at a purity of ≥98.5%. The compound has the formula C20H10Na2O5, corresponding to a molecular weight of 376.3 g/mol. Systematically, it is named disodium, 2-(3-oxido-6-oxoxanthen-9-yl)benzoate. Alternative names: Acid Yellow 73 and Uranine.

It is supplied as a powder, dark red - orange, passes test. 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.

Key uses span histology and cytology staining, microscopy, clinical laboratories and fluorescent labelling. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Fluoresceine sodium, indicator in 25 g, 100 g, 500 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Fluorescent labelling

Industries

Specifications & identifiers

Chemical identifiers
Product name	Fluoresceine sodium, indicator
Catalogue No.	VQ-000589
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
Purity / assay	≥98.5%
HSN code	32041211
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
Appearance	Powder, dark red - orange, passes test
H-bond donors / acceptors	0 / 5
TPSA	89.5 Å²
Synonyms	Acid Yellow 73, Uranine, Resorcinphthalein, Fluorescein disodium salt, Soluble fluorescein, Sodium fluorescein, Uranin, Uranine WSS, Resorcinol phthalein sodium, Uranine Yellow, Ak-Fluor, Fluorescein, soluble

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

IP/BP/USP

Fluorescein Sodium

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

VQ-004237

Frequently asked questions

What is the CAS number of Fluoresceine sodium, indicator?

The CAS Registry Number of Fluoresceine sodium, indicator is 518-47-8. It is also known as Acid Yellow 73, Uranine, Resorcinphthalein.

What is the molecular formula and molecular weight of Fluoresceine sodium, indicator?

Fluoresceine sodium, indicator has the molecular formula C20H10Na2O5 and a molecular weight of 376.3 g/mol.

Which grade and pack sizes of Fluoresceine sodium, indicator can I order?

We supply Fluoresceine sodium, indicator in (≥98.5%) grade, in 25 g, 100 g, 500 g, 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Fluoresceine sodium, indicator?

Yes. Every lot of Fluoresceine sodium, indicator 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 Fluoresceine sodium, indicator be shipped internationally?

Yes. Fluoresceine sodium, indicator 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.