Erythrosin B ≥95% (dye content), Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY

Synonyms: Tetraiodofluorescein, Solvent Red 140, C.I. 45430:2

M-Clarity™ quality level = MQ100

200964-25G 200964-5G
200964-25GEA 325 GBP
200964-25G 200964-5G
Erythrosin B ≥95% (dye content), Sigma-Aldrich®
Erythrosin B

Erythrosin B, also called as eosin B, is a xanthene dye. It belongs to the family of fluorescein dyes. It plays a major role in inhibiting dopamine uptake and high affinity 3H-ouabain binding and ion transport in synaptosomes from rat caudate nucleus. Erythrosin B has been used as a dye in fluorescence lifetime imaging.

Formula: C₂₀H₈I₄O₅
MW: 835,89 g/mol
Melting Pt: 303 °C (dec., lit.)
Storage Temperature: Room Temperature
MDL Number: MFCD00005044
CAS Number: 15905-32-5
EINECS: 240-046-0
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Specification Test Results

Appearance (Color): Orange to Red-Orange Conforms to Requirements
Appearance (Form) Powder
Infrared spectrum Conforms to Structure
Wave Length 258 - 266 nm
Extinction Coefficient ≥13000
Extinction Coefficient C = 0.005g/l, 95% Methanol 5% 0.1M Na2CO3 ≥32000
Carbon 27.3 - 30.2 %
Solubility (Turbidity) 1mg/ml 1M NH4OH Clear
Solubility (Color) Orange to Red

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