Eosin B für die Mikroskopie, Sigma-Aldrich®

Lieferant: SIGMA-ALDRICH MICROSCOPY

Synonyme: 2,7-Dinitro-4,5-dibromfluorescein4′,5′-Dibrom-2',7'-dinitro-3′,6′-dihydroxyspiro [2-benzofuran-3,9′-xanthen]-1-on Dinatriumsalz2-(4,5-Dibrom-3,6-dihydroxy-2,7-dinitroxanthen-9-yl)-benzoesäure DinatriumsalzEosin B DinatriumsalzEosin bläulichAcid Red 91EosinscharlachEosin blaustichig

M-Clarity™ Qualitätsstufe = MQ100

45260-100G-FEA 286 EUR
45260-100G-F 45260-25G-F
Eosin B für die Mikroskopie, Sigma-Aldrich®
Eosin B
Formel: C₂₀H₆Br₂N₂Na₂O₉
Molecular Weight: 624,06 g/mol
Schmelzpunkt: > 310 °C
Lagertemperatur: Raumtemperatur
MDL: MFCD00005041
CAS-Nummer: 548-24-3
EINECS: 208-943-1
Merck Index: 12,03638
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Spezifikation Testergebnisse

Appearance (colour) Green to very dark green and brown to very dark brown and green-brown and brown-green
Appearance (form) Powder
Assay (gravimetr.) ≥ 80.0 %
Thin layer chromatography Corresponds to standard
Solubility (color) Red to very dark red
Solubility (method) 0.01 g in 10ml water
Loss on drying ≤ 7.0 %
Infrared spectrum Conforms to structure
Wavelength (1) (uv) 509 - 524 nm
Extinction (1%/1cm) (1) (uv) ≥ 600
Solvent (uv) Water + 1ml 1% sodium carbonate
Lead (Pb) by Element analysis Not detected
Zinc (Zn) by Element analysis Not detected

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