Eosin G, Sigma-Aldrich®

Lieferant: SIGMA-ALDRICH MICROSCOPY
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Synonyme: 2,4,5,7-Tetrabromfluorescein DinatriumsalzTetrabromfluorescein DinatriumsalzEosin gelbstichigEosin G DinatriumsalzEosin gelblichEosin 225Eosin Y DinatriumsalzSolvent Red 43Dinatrium-2-(2,4,5,7-tetrabrom-6-oxido-3-oxoxanthen-9-yl)benzoatEosin Y2′,4′,5′,7′-Tetrabrom-3′,6′-dihydroxyspiro [2-benzofuran-3,9′-xanthen]-1-on Dinatriumsalz

M-Clarity™ Qualitätsstufe = MQ200

E6003-25GEA 29.7 EUR
E6003-25G E6003-250G E6003-100G
Eosin G, Sigma-Aldrich®
Eosin G

Dye content - ≥85%.


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. 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.

Formel: C₂₀H₆Br₄Na₂O₅
Molecular Weight: 691,86 g/mol
Schmelzpunkt: 255,..270 °C
Dichte: 1,018 g/cm³
Flammpunkt: 191,6 °C
Lagertemperatur: Room Temperature
MDL: MFCD00005040
CAS-Nummer: 17372-87-1
EINECS: 241-409-6
Merck Index: 13,03634

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Spezifikation Testergebnisse

Appearance (Form) Powder or Crystals
Infrared spectrum Conforms to Structure
Solubility (Colour) 1 mg/ml H₂O Orange to Very Dark Orange and Red to Very Dark Red and Orange-Red and Red-Orange
Solubility (Turbidity) Clear
Dye Content ≥85%
pH 6.55 (29 °C, 84 °F)

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