Merck
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E4382

Sigma-Aldrich

Eosin Y disodium salt

certified by the Biological Stain Commission

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
Empirical Formula (Hill Notation):
C20H6Br4Na2O5
CAS Number:
Molecular Weight:
691.85
Colour Index Number:
45380
Beilstein:
3586809
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

grade

certified by the Biological Stain Commission

Quality Level

form

powder

composition

Dye content, ≥90%

solubility

H2O: 1 mg/mL

density

1.018 g/cm3

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

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

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

InChI key

SEACYXSIPDVVMV-UHFFFAOYSA-L

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Application

Eosin Y disodium salt has been used as a counterstain in immunocytochemistry and immunohistochemistry.

Packaging

25, 100 g in glass bottle

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.

Suitability

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.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Sens. 1

Storage Class Code

13 - Non 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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

Certificate of Analysis

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Certificate of Origin

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