Azorubin S, extra pure 50%

Name: Azorubin S, extra pure 50%
Brand: Vaqora Chemicals
SKU: VQ-045767

About Azorubin S, extra pure 50%

Azorubin S is a biological stain (Extra Pure grade) carrying the CAS registry number 3567-69-9 with a typical assay of 50%. The compound has the formula C20H12N2Na2O7S2, corresponding to a molecular weight of 502.4 g/mol. Common synonyms include azorubine and Carmoisine.

Keep the container tightly sealed and store it in a cool, dry area. Good laboratory practice and suitable PPE are recommended during handling.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and biological staining. It is used across academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Available in 25 g and 1000 g packs, Azorubin S is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Azorubin S, extra pure 50%
Catalogue No.	VQ-045767
CAS Number	3567-69-9
IUPAC name	disodium;4-hydroxy-3-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
Molecular formula	C₂₀H₁₂N₂Na₂O₇S₂
Molecular weight	502.4 g/mol
Exact mass	501.9881
Grade	Extra Pure
Purity / assay	50%
HSN code	32041219
InChIKey	YSVBPNGJESBVRM-UHFFFAOYSA-L
SMILES	C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])N=NC3=C(C4=CC=CC=C4C(=C3)S(=O)(=O)[O-])O.[Na+].[Na+]
PubChem CID	19118

Physical properties
Physical form	Other
H-bond donors / acceptors	1 / 9
TPSA	176 Å²
Synonyms	azorubine, Carmoisine, Azo Rubine, Chromotrope FB, Acid red 14, C.I. Acid Red 14, Azorubin, Acid Rubine, C.I. Food Red 3, Karmesin, Brilliant Crimson Red, Food Red 3

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 3567-69-9

Microscopy

Azorubin S

CAS: 3567-69-9
Formula: C₂₀H₁₂N₂Na₂O₇S₂
MW: 502.4 g/mol

VQ-000482

Microscopy

Carmoisine A

CAS: 3567-69-9
Formula: C₂₀H₁₂N₂Na₂O₇S₂
MW: 502.4 g/mol

VQ-000531

Frequently asked questions

What is the CAS number of Azorubin S, extra pure 50%?

The CAS Registry Number of Azorubin S, extra pure 50% is 3567-69-9. It is also known as azorubine, Carmoisine, Azo Rubine.

What is the molecular formula and molecular weight of Azorubin S, extra pure 50%?

Azorubin S, extra pure 50% has the molecular formula C20H12N2Na2O7S2 and a molecular weight of 502.4 g/mol.

Which grade and pack sizes of Azorubin S, extra pure 50% can I order?

We supply Azorubin S, extra pure 50% in Extra Pure (50%) grade, in 25 g, 1000 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Azorubin S, extra pure 50%?

Yes. Every lot of Azorubin S, extra pure 50% 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 Azorubin S, extra pure 50% be shipped internationally?

Yes. We export Azorubin S, extra pure 50% worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.