Congo red, certified

Name: Congo red, certified
Brand: Vaqora Chemicals
SKU: VQ-000538

About Congo red, certified

Congo red, certified (CAS 573-58-0) is a biological stain offered by Vaqora Chemicals, specified at 85% purity. The compound has the formula C32H22N6Na2O6S2, corresponding to a molecular weight of 696.7 g/mol. Alternative names: Congo Red 4B and Cosmos Red.

It is supplied as a solid. Reported physical data include a melting point of above 360 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Typical applications include histology and cytology staining, microscopy, clinical laboratories and biological staining. Typical end-use sectors are academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Available in 25 g, 100 g and 1 kg packs, Congo red, certified is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Congo red, certified
Catalogue No.	VQ-000538
CAS Number	573-58-0
IUPAC name	disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate
Molecular formula	C₃₂H₂₂N₆Na₂O₆S₂
Molecular weight	696.7 g/mol
Exact mass	696.0838
Purity / assay	85%
HSN code	32041421
InChIKey	IQFVPQOLBLOTPF-UHFFFAOYSA-L
SMILES	C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]
PubChem CID	11313

Physical properties
Physical form	Solid
Appearance	Solid
Melting point	>360 °C
H-bond donors / acceptors	2 / 12
TPSA	233 Å²
Synonyms	Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y, C.I. Direct Red 28, Congazone sodium, Benzo Congo Red, Mitsui Congo Red, Cotton Red L

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 573-58-0

ACS

Congo red, certified, ACS

CAS: 573-58-0
Formula: C₃₂H₂₂N₆Na₂O₆S₂
MW: 696.7 g/mol

VQ-046789

Microscopy

Congo red, indicator

CAS: 573-58-0
Formula: C₃₂H₂₂N₆Na₂O₆S₂
MW: 696.7 g/mol

VQ-000539

Congo red, papers

CAS: 573-58-0
Formula: C₃₂H₂₂N₆Na₂O₆S₂
MW: 696.7 g/mol

VQ-000332

Congo red, solution

CAS: 573-58-0
Formula: C₃₂H₂₂N₆Na₂O₆S₂
MW: 696.7 g/mol

VQ-003534

Frequently asked questions

What is the CAS number of Congo red, certified?

The CAS Registry Number of Congo red, certified is 573-58-0. It is also known as Congo Red 4B, Cosmos Red, Cotton Red B.

What is the molecular formula and molecular weight of Congo red, certified?

Congo red, certified has the molecular formula C32H22N6Na2O6S2 and a molecular weight of 696.7 g/mol.

Which grade and pack sizes of Congo red, certified can I order?

We supply Congo red, certified in (85%) grade, in 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Congo red, certified?

Yes. Every lot of Congo red, certified 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 Congo red, certified be shipped internationally?

Yes. We export Congo red, certified worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.