Key Documents

Eosin Y disodium salt

Name: Eosin Y disodium salt
Brand: SIAL

Dye content ≥85%, 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:

24894349

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, ≥85 % by HPLC

form

powder

Quality Segment

200

composition

, ≥85% HPLC

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 for determining sperm viability. The swollen and stained spermatozoa were considered dead. In corneal epithelium, it has been used in the procedure of immunohistological staining.

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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This Item	E4382	318906	539211
Sigma-Aldrich E6003 Eosin Y disodium salt	Sigma-Aldrich E4382 Eosin Y disodium salt	Sigma-Aldrich 318906 Eosin Y solution	Sigma-Aldrich 539211 Protein Methyltransferase Inhibitor, AMI-5
technique(s) titration: suitable	technique(s) titration: suitable	technique(s) -	technique(s) -
color brown	color brown	color red to very dark red	color red-brown
solubility H₂O: 1 mg/mL	solubility H₂O: 1 mg/mL	solubility -	solubility water: 50 mg/mL
form powder	form powder	form liquid	form solid
application(s) diagnostic assay manufacturing hematology histology	application(s) diagnostic assay manufacturing hematology histology	application(s) diagnostic assay manufacturing hematology histology	application(s) -
Quality Level 200	Quality Level 200	Quality Level 100	Quality Level 100

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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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