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E4382

Eosin Y disodium salt

Name: Eosin Y disodium salt
Brand: SIAL

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

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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

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Properties

Product Name

Eosin Y disodium salt, certified by the BSC

agency

certified by the BSC

Quality Level

200

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

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

Description

Application

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

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.

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.

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pictograms

GHS07

signalword

Warning

hcodes

H317,H319

pcodes

P261 - P264 - P272 - P280 - P302 + P352 - P305 + P351 + P338

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

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Global Trade Item Number

SKU	GTIN
E4382-100G	04061833603710
E4382-25G	04061833603727