benzophenone


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benzophenone

[¦ben·zō·fə′nōn]
(organic chemistry)
C6H5COC6H6 A diphenyl ketone, boiling point 305.9°C, occurring in four polymorphic forms (α, β, γ, and δ) each with different melting point; used as a constituent of synthetic perfumes and as a chemical intermediate. Also known as diphenyl ketone; phenyl ketone.
References in periodicals archive ?
Benzophenone-bis-Schiff bases 1-17 were synthesized by reacting commercially available benzophenone Schiff base and different aromatic aldehydes in anhydrous methanol in the presence of few drops of acetic acid.
1/la) is a tautomeric pair of polyprenylated benzophenone with a core (diphenyl methanone) substituted by isoprenyl (s) (3-methyl-2-butenyl) and isopropenyl-2-hex-5-enyl group (s).
Benzophenones, chemical ultraviolet light absorbers used in products ranging from sunscreens and hair sprays to plastic lens filters for color photography, have been named the American Contact Dermatitis Society's 2014 Contact Allergen of the Year.
1] originating from C--0 stretching vibration in benzophenone are also observed (Fig.
Benzophenone is believed to mimic the female sex hormone oestrogen and has been linked to skin reactions in previous studies.
Line of uv stabilizers from hindered amine to benzophenone systems available as dry powder (unitized or bulk-packed) and palletized concentrate.
Polymeric photoinitiators containing in-chain benzophenone and coinitiators amine: Effect of the structure of coinitiator amine on photopolymerization.
GarCitrin is a patented natural extract combining the weight management benefits of hydroxycitric acid (HCA) with the bioavailability-enhancing effects of garcinol, a polyisoprenylated benzophenone isolated from Garcinia cambogia and Garcinia indica.
Sunscreens: Octyl methoxy cinnamate, persol MCX and benzophenone help protect skin from ultraviolet rays.
Worse, benzophenone, a sunscreen ingredient, mimics estrogen in the body, which means it is a hormone disruptor.
March 9 - The European Commission has set a maximum level for food packaging printed with inks containing 4-Methylbenzophenone or Benzophenone after it was found the potentially cancerous chemical was being used on some breakfast cereal boxes.