Ponceau S C.I. 27195


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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.

  • Botanical stain
  • Protein Stain
  • Electrophoresis
  • Biologial Stain

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


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5gm, 10gm, 25gm