141194

Ponceau S

Dye content 75 %

• Synonym(s): 3-Hydroxy-4-(2-sulfo-4-[4-sulfophenylazo]phenylazo)-2,7-naphthalenedisulfonic acid sodium salt
• Empirical Formula (Hill Notation): C₂₂H₁₂N₄Na₄O₁₃S₄
• CAS Number: 6226-79-5
• Molecular Weight: 760.57
• Colour Index Number: 27195
• EC Number: 228-319-2
• MDL number: MFCD00003892
• UNSPSC Code: 12171500
• PubChem Substance ID: 24848493
• NACRES: NA.47

Properties

• form: powder
• Quality Level: 200
• composition: Dye content, 75%
• λmax: 352 nm; 520 nm (2nd)
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: [Na+].[Na+].[Na+].[Na+].Oc1c(\N=N\c2ccc(cc2S([O-])(=O)=O)\N=N\c3ccc(cc3)S([O-])(=O)=O)c4ccc(cc4cc1S([O-])(=O)=O)S([O-])(=O)=O
• InChI: 1S/C22H16N4O13S4.4Na/c27-22-20(43(37,38)39)10-12-9-16(41(31,32)33)6-7-17(12)21(22)26-25-18-8-3-14(11-19(18)42(34,35)36)24-23-13-1-4-15(5-2-13)40(28,29)30;;;;/h1-11,27H,(H,28,29,30)(H,31,32,33)(H,34,35,36)(H,37,38,39);;;;/q;4*+1/p-4/b24-23+,26-25+;;;;
• InChI key: KQHKSGRIBYJYFX-WNDMICSESA-J

Description

General description

Ponceau S (C.l. 27195) is an anionic, very hydrophilic disazo dye. It is also known as fast ponceau 2B.

Application

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.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves