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Key Documents

E4382

Sigma-Aldrich

Eosin Y disodium salt

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

동의어(들):

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

실험식(Hill 표기법):
C20H6Br4Na2O5
CAS Number:
Molecular Weight:
691.85
색상 지수 번호:
45380
Beilstein:
3586809
EC Number:
MDL number:
UNSPSC 코드:
12171500
PubChem Substance ID:
NACRES:
NA.47

product name

Eosin Y disodium salt, certified by the Biological Stain Commission

Grade

certified by the Biological Stain Commission

Quality Level

형태

powder

구성

Dye content, ≥90%

색상

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

응용 분야

diagnostic assay manufacturing
hematology
histology

저장 온도

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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애플리케이션

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

생화학적/생리학적 작용

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.

적합성

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.

픽토그램

Exclamation mark

신호어

Warning

유해 및 위험 성명서

Hazard Classifications

Eye Irrit. 2 - Skin Sens. 1

Storage Class Code

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

개인 보호 장비

dust mask type N95 (US), Eyeshields, Gloves


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