Xanthene
Xanthene (9H-xanthene, 10H-9-oxaanthracene) is the organic compound with the formula CH2[C6H4]2O. It is a yellow solid that is soluble in common organic solvents. Xanthene itself is an obscure compound, but many of its derivatives are useful dyes.[2]
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| IUPAC name
9H-Xanthene | |
| Other names
Dibenzo[a,e]pyran 10H-9-oxaanthracene | |
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| ECHA InfoCard | 100.001.996 |
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| Properties | |
| C13H10O | |
| Molar mass | 182.222 g·mol−1 |
| Appearance | Yellow solid |
| Melting point | 101 to 102 °C (214 to 216 °F; 374 to 375 K)[1] |
| Boiling point | 310 to 312 °C (590 to 594 °F; 583 to 585 K)[1] |
| Hazards | |
| R-phrases (outdated) | R42 R43 |
| S-phrases (outdated) | S22 S36 S37 S45 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Xanthene dyes
Rhodamines are commercial dyes with xanthene cores.
Dyes that contain a xanthene core include fluorescein, eosins, and rhodamines. Xanthene dyes tend to be fluorescent, yellow to pink to bluish red, brilliant dyes. Many xanthene dyes can be prepared by condensation of derivates of phthalic anhydride with derivates of resorcinol or 3-aminophenol.
Further reading
- Neckers, Douglas C.; Valdes-Aguilera Oscar M. (1993). "Photochemistry of the Xanthene Dyes". Advances in Photochemistry. 18: 315–94. doi:10.1002/9780470133491.ch4.CS1 maint: uses authors parameter (link)
gollark: One resolution is nonlocal hidden variables, i.e. the particles have some faster-than-light-speed backchannel to communicate things.
gollark: Bell's theorem rules out "local hidden-variables" interpretations of quantum physics, meaning that quantum mechanics cannot, assuming some assumptions, be doing this by storing some extra secret metadata with particles.
gollark: As you will know in time, quantum QM mechanics has "Bell's theorem". This describes some correlations between measurements of entangled particles which QM predicts correctly (based on empirical tests) and classical physics doesn't.
gollark: What? No. That would be stupid.
gollark: Yes.
See also
References
- Xanthene at Sigma-Aldrich
- Gessner, Thomas; Mayer, Udo (2000). "Triarylmethane and Diarylmethane Dyes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a27_179.
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