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Merck

P2395

Ponceau Xylidine

Dye content ≥60 %, Powder

Synonym(s):

Acid Red 26, Ponceau 2 R, Xylidine ponceau, Xylidine ponceau 2R

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P2395-25G

$139.00

P2395-50G

$239.00

$139.00


Estimated to ship on15 December 2025Details


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About This Item

Empirical Formula (Hill Notation):
C18H14N2Na2O7S2
CAS Number:
Molecular Weight:
480.42
Colour Index Number:
16150
Beilstein:
5709350
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

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Product Name

Ponceau Xylidine, Dye content ≥60 %

form

powder

Quality Level

composition

Dye content, ≥60%

solubility

water: 10 mg/mL, clear, red

εmax

18-22 at 503-508 nm in water

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

[Na+].[Na+].Cc1ccc(\N=N\c2c(O)c(cc3cc(ccc23)S([O-])(=O)=O)S([O-])(=O)=O)c(C)c1

InChI

1S/C18H16N2O7S2.2Na/c1-10-3-6-15(11(2)7-10)19-20-17-14-5-4-13(28(22,23)24)8-12(14)9-16(18(17)21)29(25,26)27;;/h3-9,21H,1-2H3,(H,22,23,24)(H,25,26,27);;/q;2*+1/p-2/b20-19+;;

InChI key

YJVBLROMQZEFPA-LLIZZRELSA-L

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1 of 4

This Item
22308B6008199737
solubility

water: 10 mg/mL, clear, red

solubility

-

solubility

ethanol: 1 mg/mL, H2O: >30 mg/mL

solubility

water: 1 mg/mL, clear

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

cleaning products
cosmetics
food and beverages
personal care

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

form

powder

form

-

form

powder

form

powder

Quality Level

200

Quality Level

100

Quality Level

200

Quality Level

200

storage temp.

room temp

storage temp.

-

storage temp.

room temp

storage temp.

room temp

composition

Dye content, ≥60%

composition

-

composition

Dye content, ≥55%

composition

Dye content, 75%

General description

Ponceau Xylidine is a red powder which is easily soluble in water. It is used as a substitute for cochineal dye.[1]

Application

Ponceau Xylidine has been used as part of the Goldner′s trichome stain to stain thin sections.[2] It has also been used to prepare Fuchsin-Ponceau solution to stain an amyotrophic lateral sclerosis tissue-engineered skin model (ALS-TES).[3]

Pictograms

Health hazard

Signal Word

Warning

Hazard Statements

Hazard Classifications

Carc. 2

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

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S.P. Sadtler
A hand-book of industrial organic chemistry (1891)
Early detection of structural abnormalities and cytoplasmic accumulation of TDP-43 in tissue-engineered skins derived from ALS patients
Bastien Pare
Acta Neuropathologica Communications, 3(5) (2015)
Kwok-Sui Leung, Wing-Hoi Cheung
A Practical Manual for Musculoskeletal Research (2008)
Shota Kurotsu et al.
The Journal of pharmacology and experimental therapeutics, 350(1), 79-88 (2014-04-29)
Idiopathic pulmonary fibrosis is thought to involve lung injury caused by reactive oxygen species (ROS), which in turn is followed by abnormal fibrosis. A transforming growth factor (TGF)-β1-induced increase in myofibroblast number plays an important role in this abnormal fibrosis.
Henriette Jülke et al.
Cell transplantation, 24(6), 1111-1125 (2013-12-18)
The purpose of this study was to evaluate the use of three different superparamagnetic iron oxide (SPIO) particles for labeling of ovine and equine bone marrow (BM)-derived multipotent stromal cells (MSCs) in vitro. MSCs were obtained from five adult sheep

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