|
PONCEAU S |
| Synonyms. Ponceau S; C.I. Acid Red 112 tetrasodium salt; Tetrasodium 3-hydroxy-4-(2-sulphonato-4- (4-sulphonatophenylazo) phenylazo) naphthalene- 2,7-disulphonate; 2-Hydroxy-1-((4((4-sulfophenyl )azo)-2-sulfophenyl) azo)naphthalene-3,6-disulfonic acid tetrasodium salt; C.I. 27195; C.I. Acid Red 112; Ponceau Red S; 3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid tetrasodium salt; |
|
|
| PRODUCT IDENTIFICATION | |
|
CAS RN |
6226-79-5 |
|
EINECS RN |
228-319-2 |
|
FORMULA |
C22H12N4Na4O13S4 |
|
MOLE WEIGHT |
760.57 |
|
H.S CODE |
3204.19.4000 |
|
SMILES |
c12c(cc(S(=O)(=O)[O-])c(c1\N=N\c1c(ccc(c1)\N=N\c1ccc(S(=O)(=O)[ O-]) cc1)S(=O) (=O)[O-])O)cc(S(=O)(=O)[O-])cc2.[Na+].[Na+].[Na+].[Na+] |
|
CLASSIFICATION |
Stain, Azo dye, Protein stub, Coloring Agent |
|
EXTRA NOTES |
Ponceau S, Acid Red 112, or C.I. 27195 is a sodium salt of a diazo dye that may be used to prepare a stain for rapid reversible detection of protein bands on nitrocellulose or PVDF membranes (Western blotting), as well as on cellulose acetate membranes. |
|
|
| PHYSICAL AND CHEMICAL PROPERTIES | |
|
PHYSICAL STATE. |
dark brown to dark red powder |
|
MELTING POINT |
2 |
|
BOILING POINT |
|
|
DENSITY |
|
|
SOLUBILITY IN WATER |
10 g/l |
| SOLVENT SOLUBILITY |
Insoluble in ether |
|
VAPOR DENSITY |
|
|
log P(octanol-water) |
1 |
|
VAPOR PRESSURE |
|
|
AUTOIGNITION TEMP |
|
| pK |
|
|
REFRACTIVE INDEX |
|
|
FLASH POINT |
|
|
|
| STABILITY AND REACTIVITY | |
| STABILITY | Stable under normal conditions. |
|
INCOMPATIBLE MATERIALS |
Strong oxidizing agents |
| POLYMERIZATION |
Has not been reported |
|
NFPA RATINGS |
Health: 0, Flammability: 0, Reactivity: 0 |
|
|
| EXTERNAL LINKS & GENERAL DESCRIPTION |
|
USA.gov - Ponceau S Wikipedia Linking - Ponceau S Google Scholar Search - Ponceau S Drug Information Portal (U.S. National Library of Medicine) - Ponceau S PubChem Compound Summary - Ponceau S KEGG (Kyoto Encyclopedia of Genes and Genomes) - Ponceau S http://www.ncbi.nlm.nih.gov/ - Ponceau S EPA - Substance Registry Services - Ponceau S |
|
|
| SALES SPECIFICATION | |
|
APPEARANCE |
dark brown to dark red powder |
|
CONTENT |
85% min |
|
LOSS ON DRYING |
10% max |
|
|
| TRANSPORT & REGULATORY INFORMATION | |
|
UN NO. |
|
| HAZARD CLASS |
|
| PACKING GROUP | |
|
|
| SAFETY INFORMATION | |
|
HAZARD OVERVIEW |
May cause respiratory irritation. Causes skin irritation. Causes serious eye irritation |
| SIGNAL WORD | Warning |
|
PICTOGRAMS |
|
|
HAZARD STATEMENTS |
H315-H319-H335 |
|
P STATEMENTS |
P261-P305 + P351 + P338 |
| EC DIRECTIVES |
|
| HAZARD CODES |
|
|
RISK PHRASES |
36/37/38 |
|
SAFETY PHRASES |
26-37/39 |
|
|
| PACKING |
|
Preserve in light-resistant and well-closed containers |