Ponceau S CAS 6226-79-5

Ponceau S carries a negative charge and can combine with positively charged amino acid residues. At the same time, Lichun red can also combine with the non-polar regions of proteins, thus forming red bands. The staining of proteins by Lichun red is reversible. After staining, it can be washed off with distilled water, PBS or other appropriate solutions

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Model:
6226-79-5
Brand:
futurechemical
Code:
6226-79-5

Product Description

Ponceau S Basic information
Product Name:	Ponceau S
CAS:	6226-79-5
MF:	C22H17N4NaO13S4
MW:	696.62
EINECS:	228-319-2
Product Categories:	P;Stains and Dyes;Organics;Stains&Dyes, A to
Mol File:	6226-79-5.mol
Ponceau S Chemical Properties
bulk density	660kg/m3
density	1.01 g/mL at 20 °C
refractive index	n20/D 1.338
storage temp.	Store at RT.
solubility	H2O: soluble1mg/mL
form	Powder/Solid
Colour Index	27195
color	Red-brown
PH	9.0 (10g/l, H2O, 20℃)
Water Solubility	10 g/L
ε(extinction coefficient)	≥330000 at 518-522nm in deionized water at 0.015g/L
λmax	352 nm
λmax	520 nm (2nd)
Stability:	Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference	6226-79-5(CAS DataBase Reference)
EPA Substance Registry System	2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodium salt (6226-79-5)

Ponceau S 6226-79-5 C22H17N4NaO13S4 Protein detection agents Metal ion detection agents

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.