Ponceau S / scarlet s / acid red 112
Item No.： SR0035
Store at： RT
English name：Ponceau S；C.I. 27195；3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid tetrasodium salt
Other names: scarlet s; Acid red 112; 3-hydroxy-4 - [2-sulfonic acid-4 - (4-sulfonic acid phenylazo) phenylazo] - 2,7-naphthalene disulfonic acid tetrasodium salt
CAS No.: 6226-79-5
C22H12N4Na4O13S4=760.57
Grade: high purity grade
Em(520nm，H2O)：＞27000
Loss on drying: ≤ 5.0%
Biological staining test: qualified
Water solubility test (0.1%, water): acceptable
Physicochemical properties: Bordeaux red to dark red or brown powder, soluble in water and ethanol, the aqueous solution is rose red. The maximum absorption wavelength is 520 (352) nm. Irritating
Purpose: biochemical research. Biological staining, rapid staining of protein bands after electrophoresis on cellulose acetate. Ponceau S is used to dye proteins on nitrocellulose or PVDF membrane (Western blots). The following is the common dyeing solution preparation: 0.1% Ponceau S (w / V) in 5% acetic acid; 2% Ponceau S (w / V) in 30% TCA; 30% sulfosalicylic acid
Saving: RT
