Eosin B für die Mikroskopie, Sigma-Aldrich®
Lieferant: SIGMA-ALDRICH MICROSCOPY
Synonyme:
2,7-Dinitro-4,5-dibromfluorescein
, 4′,5′-Dibrom-2',7'-dinitro-3′,6′-dihydroxyspiro [2-benzofuran-3,9′-xanthen]-1-on Dinatriumsalz
, 2-(4,5-Dibrom-3,6-dihydroxy-2,7-dinitroxanthen-9-yl)-benzoesäure Dinatriumsalz
, Eosin B Dinatriumsalz
, Eosin bläulich
, Acid Red 91
, Eosinscharlach
, Eosin 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 |
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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