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Pyranine

Pyranine is a hydrophilic, pH-sensitive fluorescent dye from the group of chemicals known as arylsulfonates. Pyranine is soluble in water and is used as a coloring agent, biological stain, optical detecting reagent, and pH indicator. 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.

Synthesis

Pyranine is synthesized from pyrenetetrasulfonic acid and a solution of sodium hydroxide in water under reflux. The trisodium salt crystallizes as yellow needles when adding an aqueous solution of sodium chloride.

References

References

  1. "C&L Inventory".
  2. "chem industry entry".
  3. "Comparative Toxicogenomics Database entry".
  4. "chemical land 21 entry".
  5. "Sci-Toys entry".
  6. "D&C Green No. 8 (C.I. 59040)".
  7. (1939). "Die Sulfosäuren des Pyrens und ihre Abkömmlinge". Justus Liebig's Annalen der Chemie.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

staining-dyes fluorescent-dyes sulfonates pyrenes hydroxyarenes organic-sodium-salts
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