What is a Benzophenone?

Benzophenone is an organic compound with the chemical formula C₆H₅COC₆H₅. It is a type of aromatic carbonyl compound and appears as a white crystalline powder with a characteristic aromatic odor. It is soluble in solvents and is widely used in the chemical industry due to its optical and ultraviolet (UV) absorption properties. Benzophenone is primarily used as a UV absorber, and it is incorporated into a variety of products, such as cosmetics, sunscreens, plastics, coatings, and paints. It serves to protect materials from UV radiation. Additionally, it can act as a catalyst in chemical reactions, particularly in photochemical reactions, and is used in some light-activated reactions.

Furthermore, benzophenone is utilized in optical applications due to its ability to initiate light reactions. It is commonly found in light-curing materials, printing inks, coatings, and photographic films. However, benzophenone may cause skin irritation or allergic reactions, which is why its use in cosmetics and sunscreens is regulated, with specific limits on the amounts used. Additionally, benzophenone can have an environmental impact, so appropriate handling and disposal are required.

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