Merck
All Photos(3)

141194

Sigma-Aldrich

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:
Molecular Weight:
760.57
Colour Index Number:
27195
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

form

powder

Quality Level

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

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Ponceau S Dye content 75 %

Sigma-Aldrich

141194

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Sigma-Aldrich

P3504

Ponceau S

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Supelco

96365

Ponceau 6R

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Supelco

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Ponceau 4R

form

powder

form

powder

form

-

form

-

composition

Dye content, 75%

composition

-

composition

-

composition

-

λmax

352 nm, 520 nm (2nd)

λmax

-

λmax

-

λmax

-

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

cleaning products
cosmetics
food and beverages
personal care

application(s)

-

storage temp.

room temp

storage temp.

room temp

storage temp.

-

storage temp.

2-8°C

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

-

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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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