Ponceau S 75% (dye content), Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY
Warning

Synonyms: 3-Hydroxy-4-(2-sulpho-4-[4-sulphophenylazo]phenylazo)-2,7-naphthalenedisulphonic acid sodium salt, CI 27195, Ponceau, 3-Hydroxy-4-((2-sulpho-4-((4-sulphophenyl)diazenyl)phenyl)diazenyl)naphthalene-2,7-disulphonic acid, tetrasodium salt

M-Clarity™ quality level = MQ200

141194-100G 141194-25G
141194-100GEA 274 EUR
141194-100G 141194-25G
Ponceau S 75% (dye content), Sigma-Aldrich®
Ponceau S

Ponceau S (C.l. 27195) is an anionic, very hydrophilic disazo dye. It is also known as fast ponceau 2B. Ponceau S is widely used to stain proteins on gel electropherograms. It is a suitable stain for proteins adsorbed onto nitrocellulose membranes. It also has applications in botanical staining manuals as a stain for sieve plate elements.

Formula: C₂₂H₁₂N₄Na₄O₁₃S₄
MW: 760,56 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00003892
CAS Number: 6226-79-5
EINECS: 228-319-2
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Specification Test Results

Appearance (Form) Powder
Infrared spectrum Conforms to Structure
Wavelength C=0.015 G/L DI water 518 - 522 nm
Extinction Coefficient ≥33000
Carbon 25.9 - 43.2 %
Nitrogen 5.4 - 9.2 %

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