Fluorexone ( Calcein ) is a fluorescent dye with absorption and radiation at 495 / 515nm, respectively. It is used as a complexometric indicator for calcium , including in the presence of magnesium, and in the fluorometric determination of calcium. Used at pH > 12, in NaOH .
| Fluorexon | |
|---|---|
 | |
| Are common | |
| Chem. formula | C 30 H 26 N 2 O 13 |
| Physical properties | |
| Molar mass | 622.55 g / mol |
| Thermal properties | |
| T. melt. | decays |
| Classification | |
| Reg. CAS number | 1461-15-0 |
| PubChem | |
| Reg. EINECS number | |
| Smiles | |
| Inchi | |
| Chebi | |
| ChemSpider | |
Possible applications for the determination of strontium and barium. Copper, zinc, magnesium and aluminum are determined at a pH of 10.0-12.5.
Literature
- Korostelev P. P. Reagents for technical analysis: Ref. ed. - M .: Metallurgy, 1988 .-- S. 274. - 384 p.
- Frumina N.S., Kruchkova E.S., Mushtakova S.P. Analytical chemistry of calcium. - M .: "Science", 1974. - S. 54-57. - (Analytical chemistry of elements). - 2150 copies.