Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide

苯基双(2,4,6-三甲基苯甲酰基)氧化膦

Also known as: Bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, Irgacure 819, Photoinitiator 819, OMNIRAD 819, OMNIRAD 380, Photoinitiator XBPO, BAPO, Bisacylphosphine oxide, (Phenylphosphoryl)bis(mesitylmethanone), Methanone, [phenyl(2,4,6-trimethylbenzoyl)phosphinyl](2,4,6-trimethylphenyl)-, Phosphine oxide, phenylbis(2,4,6-trimethylbenzoyl)-, former IRGACURE 819

Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (CAS 162881-26-7) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C26H27O3P and a molecular weight of 418.465 g/mol. It is also known as Bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide, Irgacure 819 and Photoinitiator 819. Key properties include a melting point of 131-135ºC, a boiling point of 590.0±60.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 310.6±32.9 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

162881-26-7

Jingsj CID

J-45818-6

Molecular Formula

C₂₆H₂₇O₃P

Chinese Name

苯基双(2,4,6-三甲基苯甲酰基)氧化膦

Molecular Weight

418.465 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026