Ponceau S

Name: Ponceau S
Brand: Vaqora Chemicals
SKU: VQ-000687

About Ponceau S

Ponceau S is a biological stain (Electrophoresis grade) carrying the CAS registry number 6226-79-5. Its molecular formula is C22H12N4Na4O13S4 and its molecular weight is 760.6 g/mol. Alternative names: Acid Red 112 and Ponceau S Extra.

Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for 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.

Vaqora Chemicals supplies Ponceau S in 25 g, 100 g, 1 kg and 4 x 25 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Ponceau S
Catalogue No.	VQ-000687
CAS Number	6226-79-5
IUPAC name	tetrasodium;3-hydroxy-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]naphthalene-2,7-disulfonate
Molecular formula	C₂₂H₁₂N₄Na₄O₁₃S₄
Molecular weight	760.6 g/mol
Exact mass	759.8874
Grade	Electrophoresis
HSN code	32049000
InChIKey	KQHKSGRIBYJYFX-UHFFFAOYSA-J
SMILES	C1=CC(=CC=C1N=NC2=CC(=C(C=C2)N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
PubChem CID	2723873

Physical properties
Physical form	Other
H-bond donors / acceptors	1 / 17
TPSA	332 Å²
Synonyms	Acid Red 112, Ponceau S Extra, C.I. Acid Red 112, Ponceau Red S, C.I. Acid Red 112, tetrasodium salt, Ponceau S, BS, ponceau-s, Ponceau S sodium salt, Ponceau S, Electrophoresis Grade, Ponceau S solution, 0.1 % (w/v) in 5% acetic acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P305 + P351 + P338

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

Frequently asked questions

What is the CAS number of Ponceau S?

The CAS Registry Number of Ponceau S is 6226-79-5. It is also known as Acid Red 112, Ponceau S Extra, C.I. Acid Red 112.

What is the molecular formula and molecular weight of Ponceau S?

Ponceau S has the molecular formula C22H12N4Na4O13S4 and a molecular weight of 760.6 g/mol.

Which grade and pack sizes of Ponceau S can I order?

We supply Ponceau S in Electrophoresis grade, in 25 g, 100 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 Ponceau S?

Yes. Every lot of Ponceau S 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 Ponceau S be shipped internationally?

Yes. Ponceau S 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.