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Description
Ponceau S: Ponceau S is the sodium salt of a diazo dye. It is used to make a stain for rapid reversible staining of protein bands on nitrocellulose or PVDF membranes (Western blots) and also for staining protein on cellulose acetate membranes. The stain is reversed with water washes and aids in subsequent immunological detection.
Specification
| Grade | Indicator |
| Formula | C22H12N4Na4O13S4 |
| MW | 760.61 |
| CAS | 6226-79-5 |
| Appearance | Red-brown to dark-brown Powder |
| Identification | To pass test |
| Lambda max. | ~520 (352) nm in water |
| Dye content | >80% |
| Loss on drying | <10% |
| Solubility | Readily soluble in water to give a clear red solution |
| Storage | R.T |
Documents
Disclaimer: For laboratory research use only.
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