Benzophenone4

Benzophenone-4, also known as 4-methylbenzophenone, is an organic compound with the chemical formula C13H12O. It is a derivative of benzophenone, where one of the hydrogen atoms on the benzene ring is replaced by a methyl group. Benzophenone-4 is a colorless to pale yellow crystalline solid at room temperature. It is soluble in organic solvents such as ethanol, acetone, and benzene, but insoluble in water.

Benzophenone-4 is primarily used as a UV filter in sunscreen formulations. It absorbs UV-B and UV-A radiation, protecting the skin from harmful UV rays. It is also used in the production of certain dyes and as a building block in organic synthesis.

The compound is relatively stable under normal conditions but can degrade under prolonged exposure to light or heat. It is also known to be a potential endocrine disruptor, although the extent of its impact on human health is still a subject of ongoing research.

Benzophenone-4 was first synthesized in the early 20th century and has since been studied for its various applications. Its use in sunscreens has been a topic of debate due to concerns about its potential health effects, but it remains a popular choice in many sunscreen products due to its effectiveness as a UV filter.