【Chemical Name】 Fluorescein
【Synonym】
FLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACID;Diresorcinolphthalein;Tetraoxyphthalophenone anhydride;SOLVENT YELLOW 94;S NO 880;RESORCINOL PHTHALEIN;FLUORESCEIN, ALCOHOL SOLUBLE;FLUORESCEIN
【CAS No】 2321-07-5
【Molecular Formula】 C20H12O5
【Molecular Weight】 332.31
【Properties】 Melting point 320 ° C (lit.) Boiling point 429.44 ° C (rough estimate) density 1.2739 (rough estimate) refractive index 1.5000 (estimate)
【Specification】≥99
【Packing】25kg/drum
【Usage】 1. Intermediate of mercury bromide red. Fluorescent analytical reagent for the determination of chlorine, bromine, iodine and sulfur ions; Oxidation reduction indicator reagent; Biological stain.
2. Analyze sulfur ion with fluorophotometry, test bromine, and titrate chlorine, bromine, and iodine. Adsorption indicator, redox indicator.
3. Adsorption indicator; Redox indicator; Fluorimetric analysis of sulfur ions; Titrate chlorine, bromine and iodine
【Product Specification】
Item | Specifications | |
The maximum absorption wavelength(nm) | λ（PH 8.0） | 490.0~493 |
Mass absorption coefficient(L/cm·g) | λ (PH 8.0) | ≥200 |
Ethanol dissolution test | Conforms | |
Sensitivity test | Conforms | |
Residue on ignition(Sulfate) | ≤0.3 | |
Loss on Drying | ≤5.0 | |