Pyranine
 | |
| Names | |
|---|---|
| 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 | |
6358-69-6  | |
| EC number | 228-783-6 |
| Jmol-3D images | Image |
| PubChem | 4136521 |
| |
| Properties | |
| C16H7Na3O10S3 | |
| Molar mass | 524.37 |
| Appearance | yellow-green crystalline powder |
| Soluble | |
| Hazards | |
| Main hazards | XI |
| R-phrases | 36/37/38 |
| S-phrases | 26-36 |
| Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
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| Infobox references | |
Pyranine is a hydrophilic, pH-sensitive fluorescent dye from the group of chemicals known as arylsulfonates.[1][2] Pyranine is soluble in water and has applications as a coloring agent, biological stain, optical detecting reagent, and a pH indicator.[3][4] One example would be the measurement of intracellular pH.[5] Pyranine is also found in yellow highlighters, giving them their characteristic fluorescence and bright yellow-green colour. It is also found in some types of soap.[6]