International Shipping

We do not offer international shipping to countries within the European Union

We can only ship non-hazardous products to Rest of World

Ponceau S C.I. 27195

Price: £8.36
Stock Availability:

Compare all Pack Sizes

Stock Availability
On Shelf - Approx. UK delivery date: Thursday the 11th September 2025*
In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)
4 to 6 weeks approx. (Not guaranteed)
UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed
  • Botanical stain
  • Protein Stain
  • Electrophoresis
  • Biologial Stain

Ponceau S, also known as acid red is a stain that may be used to prepare a solution for rapid reversible detection of protein bands on nitrocellulose or PVDF membranes (Western blotting), as well as on cellulose acetate membranes. A Ponceau S stain is easily reversed with water washes, facilitating subsequent immunological detection.

  • C.I. 27195
  • Molecular Formula: C22H12N4O13S4Na4
  • Molecular Weight: 760.54 g/mol
  • Wavelength Absorption:(E1% in a 1cm cell in Ethanol: 517-523nm
  • Specific Asborption(E1% in 10mm cell): 460-600
  • Loss on drying: <10%

Hazard Phrases: Not considered harmful under normal laboratory conditions

Cas No: 6226-79-5
Einecs No: 228-319-2

Payment Methods

We can also accept a bank transfer (UK Only)

Source Chemicals Ltd