Benzophenone is an organic compound with the formula (C6H5)2CO, generally abbreviated Ph2CO. It is a white solid that is soluble in organic solvents. It is a widely used building block in organic chemistry, being the parent diarylketone. It is also used in a variety of applications, including:
- Sunscreen: It is a UV filter that absorbs ultraviolet light and helps to protect the skin from sun damage.
- Fragrance: It has a flowery odor and is used as a fragrance ingredient in perfumes, soaps, and other personal care products.
- Plastics: It is used as an additive in plastics to improve their UV resistance.
- Adhesives: It is used as an additive in adhesives to improve their adhesion and UV resistance.
- Pharmaceuticals: Benzophenone is used in the manufacture of some pharmaceuticals, such as hypnotic drugs and antihistamines.
Benzophenone is generally considered to be safe when used in small amounts. However, it can be harmful if ingested or inhaled in large amounts. It can also cause allergic reactions in some people.
Here are some of the physical properties of benzophenone:
- Molecular formula: C13H10O
- Molecular weight: 182.22 g/mol
- Melting point: 48.3 – 50.6 °C
- Boiling point: 282 °C
- Density: 1.10 g/cm3
- Soluble in organic solvents, insoluble in water
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