Skip to Content
MilliporeSigma
Get up to 22% off for Pi Day through March 27.Save Now

E4382

Eosin Y disodium salt

Dye content, ≥90%, certified by the Biological Stain Commission, powder

Synonym(s):

2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bromofluorescein, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish

Slide 1 of 3
Sign In to View Organizational & Contract Pricing.

Select a Size

25 G

$75.10

100 G

$201.00

$75.10

Available to ship TODAYDetails

​
Request a Bulk Order

About This Item

Empirical Formula (Hill Notation):
C20H6Br4Na2O5
CAS Number:
17372-87-1
Molecular Weight:
691.85
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
24894551
EC Number:
241-409-6
MDL number:
MFCD00005040
Colour Index Number:
45380
Beilstein/REAXYS Number:
3586809

Key Documents

View All Documentation

Skip To

Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

Eosin Y disodium salt, certified by the BSC

InChI key

SEACYXSIPDVVMV-UHFFFAOYSA-L

InChI

1S/C20H8Br4O5.2Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;/h1-6,25H,(H,27,28);;/q;2*+1/p-2

SMILES string

[Na+].[Na+].[O-]C(=O)c1ccccc1C2=C3C=C(Br)C(=O)C(Br)=C3Oc4c(Br)c([O-])c(Br)cc24

agency

certified by the BSC

form

powder

composition

Dye content, ≥90%

technique(s)

titration: suitable

color

brown

pH

6.55 (29 °C, 84 °F)

mp

255 — 270 °C (491 - 518 °F at 977.9 hPa)

solubility

H2O: 1 mg/mL

density

1.018 g/cm3

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

Quality Level

200

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
E60033189061.04134
Eosin Y disodium salt certified by the BSC

Sigma-Aldrich

E4382

Eosin Y disodium salt

Eosin Y disodium salt ≥85 % by HPLC

Sigma-Aldrich

E6003

Eosin Y disodium salt

Eosin Y solution 5 wt. % in H2O

Sigma-Aldrich

318906

Eosin Y solution

Eosin Y (yellowish) (C.I. 45380)

Sigma-Aldrich

1.04134

Eosin Y (yellowish) (C.I. 45380)

grade

certified by the Biological Stain Commission

grade

-

grade

-

grade

-

technique(s)

titration: suitable

technique(s)

titration: suitable

technique(s)

-

technique(s)

-

color

brown

color

brown

color

red to very dark red

color

-

form

powder

form

powder

form

liquid

form

solid

solubility

H2O: 1 mg/mL

solubility

H2O: 1 mg/mL

solubility

-

solubility

300 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

Application

Certified for use as a counterstain against hematoxylin; as a constituent of Wright stain; in modified Nocht′s stain; as a constituent in eosin-methylene blue medium.
Eosin Y disodium salt has been used as a counterstain in immunocytochemistry and immunohistochemistry.

Biochem/physiol Actions

Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm. In histopathology, it is applied as a counterstain after hematoxylin and before methylene blue. It is also used as a background stain, thereby giving contrast to the nuclear stains.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H317,H319

Hazard Classifications

Eye Irrit. 2 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

376.9 °F - Pensky-Martens closed cup

flash_point_c

191.6 °C - Pensky-Martens closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
0000525103
0000525103
0000525130
0000525130
0000510152

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Different expression of occludin and ZO-1 in primary and metastatic liver tumors.
Orban E, et al.
Pathology Oncology Research, 14, 299-299 (2008)
Dendritic cell loss from nonlymphoid tissues after systemic administration of lipopolysaccharide, tumor necrosis factor, and interleukin 1.
Roake JA, et al.
The Journal of Experimental Medicine, 181, 2237-2237 (1995)
Bancroft JD
Theory and Practice of Histological Techniques (2008)
Joanne M Donkers et al.
Cellular and molecular gastroenterology and hepatology, 10(3), 451-466 (2020-04-25)
Bile acids are important metabolic signaling molecules. Bile acid receptor activation promotes body weight loss and improves glycemic control. The incretin hormone GLP-1 and thyroid hormone activation of T4 to T3 have been suggested as important contributors. Here, we identify
Histophatologic Techniques null
View All Related Papers

Articles

Protein Staining Reagents Selection Guide

Sigma offers EZBlue™ and ProteoSilver™ reagents for protein visualization, suitable for proteomics and traditional PAGE formats.

Questions

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service