Ponceau S
Biological dye grade, Biological stain
Reagent
Code: #111683
Alias
Ponceau S; Scarlet S, Acid Red 112, 3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalene disulfo Acid tetrasodium salt
CAS Number
6226-79-5
science Other reagents with same CAS 6226-79-5
blur_circular Chemical Specifications
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Molecular Information
Weight
760.57 g/mol
Formula
C₂₂H₁₂N₄Na₄O₁₃S₄
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Registry Numbers
MDL Number
MFCD00003892
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Storage & Handling
Density
1.01 g/mL at 20 °C
Storage
room temperature
description Product Description
Ponceau S is widely used as a biological stain in various laboratory applications. It is particularly effective for staining proteins after electrophoresis, such as in SDS-PAGE gels, allowing for the visualization of protein bands. The stain provides a quick and simple method to assess the quality and quantity of protein samples. Additionally, Ponceau S is used in membrane staining to verify protein transfer efficiency during Western blotting. Its reversible nature makes it a preferred choice, as it can be easily washed off without interfering with subsequent immunodetection steps.
format_list_bulleted Product Specification
| Test Parameter | Specification |
|---|---|
| Loss on Drying | 0-5 |
| Appearance | Brown to very dark brown, brown-red, red-brown, and very dark red-brown powder |
| Infrared Spectrum | Conforms To Structure |
| Biological Staining Test | Suitable |
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