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| IUPAC name
| Other names
|Molar mass||182.22 g/mol|
|Density||1.11 g/cm3 (20 °C)|
|Melting point||48.5 °C (119.3 °F; 321.6 K)|
|Boiling point||305.4 °C (581.7 °F; 578.5 K)|
|0.0137 g/100 ml (at 25 °C)|
|Solubility||Soluble in glacial acetic acid, acetone, benzene, carbon disulfide, CCl4, methanol|
|Solubility in diethyl ether||16.6 g/100 ml|
|Solubility in ethanol||13.3 g/100 ml|
|Vapor pressure||1.93·10-3 mm Hg at 25 °C|
|Safety data sheet||Sigma-Aldrich|
|Flash point||110 °C (230 °F; 383 K)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Benzophenone can be reduced by sodium metal to produce the intensely blue colored benzophenone ketyl radical. This is highly reactive towards water and oxygen so it can be used as an indicator of solvent dryness.
Benzophenone is a strong UV absorber, owing to cross-conjugation. This results in its use as a UV photoinitiator in some UV curing resins. Derivatives of benzophenone are often used in sunscreens and as an additive to prevent the UV-induced degradation of polymers.
Benzophenone is a white solid, with a characteristic smell, practically insoluble in water, but more soluble in organic solvents.
Benzophenone is sold by lab suppliers. Can also be purchased from eBay.
Benzophenone is produced by the copper-catalyzed oxidation of diphenylmethane with oxygen from air.
It can also be produced by the ketonic decarboxylation of calcium benzoate.
- Photosensitizer in photochemistry
- Water indicator in air-free techniques
Benzophenone is considered safe, but it may be irritant.
In sealed bottles.
Can be neutralized by oxidizing it with an oxidizing solution/mixture.