Benzophenone
Encyclopedia : B : BE : BEN : Benzophenone
| Benzophenone | |
|---|---|
| |
| General | |
| Systematic name | Benzophenone |
| Other names | diphenylmethanone phenyl ketone diphenyl ketone benzoylbenzene |
| Molecular formula | C13H10O |
| SMILES | O=C(C2=CC=CC=C2)C1=CC=CC=C1 |
| Molar mass | 182.217 g/mol |
| Appearance | white solid |
| CAS number | [119-61-9] |
| Properties | |
| Density and phase | 1.11 g/cm3, solid |
| Solubility in water | insoluble |
| Melting point | 47.9 °C |
| Boiling point | 305.4 °C |
| Acidity (pKa) | ? |
| Dipole moment | |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) [Chemical infoboxInfobox disclaimer and references] | |
Benzophenone, also known as diphenylmethanone, phenyl ketone, diphenyl ketone, or benzoylbenzene. The chemical formula is (C6H5)2CO / Ph2CO. Substituted benzophenones like oxybenzone and dioxybenzone are used in sunscreen. Benzophenone is also used as an indicator for THF stills. The color corresponds qualitatively to the dryness of the still with green and light blue being very wet and dark purple being very dry.
Benzophenone is one of the most commonly used photosensitisers in photochemistry. Its triplet is readily quenched by oxygen, and can also react with a suitable hydrogen donor to for a ketyl radical.
Derivatives
- p,p'-bis(N,N-dimethylamino)benzophenone or Michler's ketone has two dimethylamino substituents in the para position.
External links
- For a full list of external links to MSDSs, spectroscopic data, commercial chemicals suppliers etc. for this compound, see [Chemical sources].
Reference
- Merck Index, 11th Edition, 1108.
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