Umbelliferone, also known as 7-hydroxycoumarin, hydrangine, skimmetine, and beta-umbelliferone, is a widespread natural product of the coumarin family.
It absorbs ultraviolet light strongly at several wavelengths. Despite several indications that this chemical is photomutagenic, it is used in sunscreens. Umbelliferone has been reported to have antioxidant properties.[medical citation needed]; It is a yellowish-white crystalline solid that has a slight solubility in hot water, but high solubility in ethanol.
| Name | 7-Hydroxycoumarin | EINECS | 202-240-3 |
| CAS No. | 93-35-6 | Density | 1.043 g/cm3 |
| PSA | 50.44000 | LogP | 1.49860 |
| Solubility | Easily soluble in ethanol, chloroform, acetic acid, soluble in dilute alkali, slightly soluble in ether | Melting Point | 230 °C (dec.)(lit.)
|
| Formula | C9H6O3 | Boiling Point | 382.081 °C at 760 mmHg |
| Molecular Weight | 162.145 | Flash Point | 181.176 °C |
| Transport Information | N/A | Appearance | light brownish powder |
Appearance and properties: gray crystalline powder
Density: 1.403g/cm3
Boiling point: 382ºC
Melting point: 230 °C (dec.)(lit.)
Refractive index: 1.64
Water solubility: 1 g/100 mL (100 ºC)
Storage conditions: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Usage:Used as fluorescent indicator and acid-base indicator (pH 6.5-8.0).
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