Sodium fluorescein / disodium fluorescein / sodium fluorescein orange
Item No.： SR0090
Store at： RT
English name：Fluorescein disodium salt；Uranine；Uranine yellow；Soluble fluorescein；Resorcinolphthalein sodium；C.I.45350
Other names: sodium fluorescein; Fluorescein disodium; Fluorescent orange red sodium; 9 - (o-carboxyphenyl) - 6-hydroxy-3h-xanthene-3-one disodium salt
CAS No.: 518-47-8
C20H10O5Na2=376.27
Grade: BS
pH（10g/L，25℃）：7.0～8.5
Loss on drying: ≤ 7.0%
Biological staining test: qualified
Water dissolution test: acceptable
Physicochemical properties: orange red powder. No smell. It is hygroscopic. It is easy to dissolve in water. The solution is yellow red and has strong yellow green fluorescence. It disappears after acidification and reappears after neutralization or alkalization. It is slightly soluble in ethanol and almost insoluble in chloroform and ether. The aqueous solution is isotonic with plasma. The maximum absorption wavelength (water) is 493.5mm. LD50 (rat, oral) 6721mg / kg
Purpose: biochemical research. Adsorption indicator; Redox indicator. Sulfur ion was analyzed by fluorescence spectrophotometry; Titration of chlorine, bromine and iodine
Saving: RT
