American Heritage® Dictionary of the English Language, Fourth Edition
- n. A white crystalline compound, C6H5COC6H6, used in perfumery and in medicine. Also called diphenylketone.
Century Dictionary and Cyclopedia
- n. Diphenylketone, (C6H5)2CO, a compound formed by the dry distillation of calcium benzoate. It melts at 48° C. and boils at 306.1° C.
“The most common agent is benzophenone, which is oxybenzone, listed on the sunscreens.”
“* Avoiding use of sun tan lotions that harm reefs (those that contain chemical UV barriers such as benzophenone and cinnamate and also parabens).”
“Garcinol is a polyisoprenylated benzophenone which is isolated from garcinia cambogia and Garcinia indica fruits.”
“Of additional and generally unrecognized concern is that other ingredients, benzophenone, and EDTA, are "penetration enhancers.”
“Oxybenzone is derived from benzophenone and used in hundreds of skincare products from sunscreens to lip balms.”
“Here is the JChemPaint generator PNG image for benzophenone:”
“In seeking to avoid potential harm from sunscreens, one must not only be conscious of chemicals shown to collect in tissues and have estrogenic effects, such as octylmetoxycinnimate or benzophenone (which also generates free radicals), but also be aware of the fact that many of these chemicals do not protect from all UVA (skin aging) rays, only burning (UVB) rays, and may even contribute to skin damage.”
“The research team found that three commonly used ultraviolet UV filters -- octylmethoxycinnamate, benzophenone 3 and octocrylene -- eventually soak into the deeper layers of the skin after their application, leaving the top skin layers vulnerable to sun damage.”
“Now, the ever-alert Mary Shomon, About.com's Thyroid guru, points out a European study that suggests that chemicals called MBC and benzophenone 2 (BP2), frequently found in sunscreen and cosmetics are (eek!)”
“In the presence of AlCl_3 the chlorides easily combine with benzene, and on removing the carbomethoxy group unsymmetrical hydroxy derivatives of benzophenone are formed: --”
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