Fluorescein 95% (Farbstoffgehalt), Sigma-Aldrich®

Lieferant: SIGMA ALDRICH MICROSCOPY
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Synonyme: 6-Hydroxy-9-(2-carboxyphenyl)-(3H)-3-xanthenon, Resorcinphthalein, 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoesäure, 9-(2-Carboxyphenyl)-6-hydroxy-(3H)-3-xanthenon, 3′,6′-Dihydroxyspiro[2-benzofuran-3,9′-xanthen]-1-on, 6-Hydroxy-9-(2-carboxyphenyl)-(3H)-xanthen-3-on, 2-(6-Hydroxy-3-oxo-(3H)-xanthen-9-yl)-benzoesäure, Fluoreszein

M-Clarity™ Qualitätsstufe = MQ200

F2456-100G F2456-500G
F2456-100GEA 72.6 EUR
F2456-100G F2456-500G
Fluorescein 95% (Farbstoffgehalt), Sigma-Aldrich®
Fluorescein
Formel: C₂₀H₁₂O₅
Molecular Weight: 332,31 g/mol
Schmelzpunkt: 320 °C (Lit.)
Lagertemperatur: Room Temperature
MDL: MFCD00005050
CAS-Nummer: 2321-07-5
EINECS: 219-031-8
Merck Index: 13,04185
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Spezifikation Testergebnisse

Appearance Orange to red-brown or maroon powder
Infrared Spectrum Conforms to structure and standard.
UV-Visible Spectrum 0.003 g/L, 0.01 N NaOH
E(490 +/- 2 Nm) = >70,000
E(284 +/- 2 Nm) = >12,000
E(238 +/- 2 Nm) = >39,000
Titration 94.5%-105.5% (With NaOH)
Solubility 1 mg/ml 1 N NaOH; Clear orange-green to orange brown solution

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