Pyranine
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Names | |
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IUPAC name Trisodium 8-hydroxypyrene-1,3,6-trisulfonate | |
Other names 8-Hydroxypyrene-1,3,6-trisulfonic acid; Solvent Green 7; HPTS; Sulfonated hydroxy pyrene trisodium salt | |
Identifiers | |
CAS Number |
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3D model (JSmol) |
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ECHA InfoCard | 100.026.166 ![]() |
EC Number |
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PubChem CID |
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UNII |
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CompTox Dashboard (EPA) |
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InChI
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Properties | |
Chemical formula | C16H7Na3O10S3 |
Molar mass | 524.37 g·mol−1 |
Appearance | Yellow-green crystalline powder |
Solubility in water | Soluble |
Hazards | |
GHS labelling:[1] | |
Pictograms | ![]() |
Warning | |
Hazard statements | H315, H319, H335 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ![]() ![]() ![]() Infobox references |
Chemical compound
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.
External links
- CTD's Pyranine page from the Comparative Toxicogenomics Database