Detection reagent
In chemistry, a detection reagent is a substance or a solution that reacts with a certain other substance in a characteristic, unmistakable way, which is known as a detection reaction . Typical color changes or the formation of precipitates can be observed. Filter paper strips soaked with detection reagents and dried are called reagent papers. Detection reagents are used primarily for the rapid identification of substances.
Known detection reagents
- ammoniacal silver nitrate solution for the detection of aldehydes or reducing sugars with the Tollensprobe
- Barium chloride solution for the detection of sulfate ions
- Bromine for the detection of C = C - double bonds
- Iron (III) chloride solution for the detection of phenols and thiocyanate ions
- Fehling's solution I and Fehling's solution II for the detection of aldehydes or reducing sugars using the Fehling sample
- Iodine-starch reaction ( Lugol's solution ) for the detection of starch
- Lime water and barite water for the detection of carbon dioxide
- Hydrochloric acid phloroglucinol solution for the detection of lignin
- Silver nitrate solution for the detection of chloride, bromide and iodide ions
Individual evidence
- ↑ Entry on reactant . In: IUPAC Compendium of Chemical Terminology (the “Gold Book”) . doi : 10.1351 / goldbook.R05163 Version: 2.3.
Web links
Wikibooks: Practical Inorganic Chemistry / Detection Reagents - Learning and Teaching Materials
- Prof. Blum's media offer: detection reagents