Fluoresceine (Noun)
Meaning
A yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed).
Classification
Nouns denoting substances.
Examples
- Fluorescein is used in a wide range of applications due to its intense fluorescence under UV light, including in medicine and scientific research.
- When a silver nitrate solution is added to sodium chloride in the presence of fluorescein, the dye is absorbed and turns pink if no chloride ions are present in the solution.
- Researchers use fluorescein to visualize anatomical structures and biological processes because it emits bright light even in low concentrations.
- The addition of silver nitrate solution to a fluorescein mixture with sodium chloride resulted in a pink hue after the fluorescent indicator precipitated as silver chloride.
- Fluorescein is often employed as a diagnostic tool in medical examination due to its visible yellow color when present in small amounts.