Introduction：Basic information about Ponceau S CAS 6226-79-5, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
Ponceau S Basic information
| Product Name: | Ponceau S |
| Synonyms: | 2,7-Naphthalenedisulfonicacid,3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-,tetrasodiumsalt;c.i.acidred112;PONCEAU S, SODIUM SALT;PONCEAU S;LABOTEST-BB LT00847573;PONCEAU S (C.I. 27195) FOR MICROSCOPY CE;ATX PONCEAU S RED;FAST PONCEAU 2B |
| CAS: | 6226-79-5 |
| MF: | C22H17N4NaO13S4 |
| MW: | 696.62 |
| EINECS: | 228-319-2 |
| Product Categories: | P;Stains and Dyes;Stains&Dyes, A to;Organics |
| Mol File: | 6226-79-5.mol |
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Ponceau S Chemical Properties
| bulk density | 660kg/m3 |
| density | 1.01 g/mL at 20 °C |
| refractive index | n20/D 1.338 |
| storage temp. | Store at RT. |
| solubility | H2O: soluble1mg/mL |
| form | Powder/Solid |
| Colour Index | 27195 |
| color | Red-brown |
| PH | 9.0 (10g/l, H2O, 20℃) |
| Water Solubility | 10 g/L |
| ε(extinction coefficient) | ≥330000 at 518-522nm in deionized water at 0.015g/L |
| λmax | 352 nm
520 nm (2nd) |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| InChIKey | LZYGEJPERQQCIY-STNZDNLRSA-J |
| CAS DataBase Reference | 6226-79-5(CAS DataBase Reference) |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodium salt (6226-79-5) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-37/39 |
| WGK Germany | 3 |
| RTECS | QJ6600000 |
| TSCA | TSCA listed |
| HS Code | 32041200 |
| Storage Class | 11 - Combustible Solids |
Ponceau S Usage And Synthesis
| Chemical Properties | red powder |
| Uses | Ponceau S dye 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. It is also suitable for electrophoresis, azo dye for reversible protein staining. This stain can also be used as a fiducial marker in mass spectrometric imaging. |
| Definition | ChEBI: An organic sodium salt that is the tetrasodium salt of 3-hydroxy-4-({2-sulfo-4-[(4-sulfophenyl)diazenyl]phenyl}diazenyl)naphthalene-2,7-disulfonic acid. |
| Preparation | 3,4′-Disulfo-4-aininoazobenzene diazo, coupled with 3-Hydroxynaphthalene-2,7-disulfonic acid. |
| storage | Room temperature |
| Properties and Applications | colourful red blue light. Soluble in water for product red. The strong sulfuric acid in blue, diluted into orange red. Add in aqueous solution hydrochloric acid basic color; Add sodium hydroxide, thicker solution will appear precipitation.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | | Fading | Stain | Fading | Stain | Fading | Stain | | ISO | 3-4 | 2-3 | 3-4 | 2 | 1-2 | | 3 | | |
Ponceau S Preparation Products And Raw materials
| Raw materials | Disodium 2-naphthol-3,6-disulfonate |
