Umbelliferone
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Description
A fluorescent dye that occurs naturally in several plants such as carrot, coriander, and belladonna. Umbelliferone is used commercially in sunscreens and fluorescent dyes. It is also used as a fluorescence indicator for metal ions such as copper and calcium.
Synonyms and Related Terms
7-hydroxycoumarin
Other Properties
Yellowish-white crystals. Soluble in hot water, ethanol
Absorbs strongly at 300, 305, 325 nm with blue fluorescence.
Used as a pH indicator for 6.5-8.9 (pKa=7.7)
| Composition | C9H6O3 |
|---|---|
| CAS | 93-35-6 |
| Melting Point | 230 |
| Molecular Weight | 162.14 |
Sources Checked for Data in Record
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Umbelliferone (Accessed Mar. 1, 2006)