How Can We Help?
Pyranine is a hydrophilic, pH-sensitive fluorescent dye from the group of chemicals known as arylsulfonates.[2][3] Pyranine is soluble in water and has applications as a coloring agent, biological stain, optical detecting reagent, and a pH indicator.[4][5] Pyranine is also used in yellow highlighters to provide their characteristic fluorescence and bright yellow-green colour. It is also found in some types of soap.[6]
Synthesis
It is synthesized from pyrenetetrasulfonic acid and a solution of sodium hydroxide in water under reflux.[7] The trisodium salt crystallizes as yellow needles when adding an aqueous solution of sodium chloride.
See also
References
- ^ "C&L Inventory". echa.europa.eu. Retrieved 13 December 2021.
- ^ "chem industry entry". Archived from the original on 2007-10-26. Retrieved 2007-12-31.
- ^ "Comparative Toxicogenomics Database entry".
- ^ "chemical land 21 entry".
- ^ "Sci-Toys entry".
- ^ "D&C Green No. 8 (C.I. 59040)". whatsinproducts.com. Retrieved 2023-05-04.
- ^ Tietze, Ernst; Bayer, Otto (1939). "Die Sulfosäuren des Pyrens und ihre Abkömmlinge". Justus Liebig's Annalen der Chemie. 540 (1): 189–210. doi:10.1002/jlac.19395400113. ISSN 0075-4617.
Recent Comments