Fluoran
Appearance
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Names | |
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Preferred IUPAC name
3H-Spiro[[2]benzofuran-1,9′-xanthen]-3-one | |
Identifiers | |
3D model (JSmol)
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ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.008.984 |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C20H12O3 | |
Molar mass | 300.31 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Fluoran is a triarylmethane dye. It is the structural core of a variety of other dyes.[1]
These dyes have a variety of applications such as chemical stains (for example eosins) and in thermal paper. Black 305 is a common leuco dye product for thermal paper.[2]
![](http://178.128.105.246/content-http-upload.wikimedia.org/wikipedia/commons/thumb/7/75/Eosin.svg/220px-Eosin.svg.png)
References
- ^ Hatano, Y. "The chemistry of fluoran leuco dyes" in Chemistry and Applications of Leuco Dyes, Ed. R. Muthyala, Plenum Press 1997
- ^ "BLACK 305". Nagase America. Nagase America Corporation. Retrieved 24 August 2019.