1,1'-(Methylene-di-4,1-phenylene)bis[2-hydroxy-2-methyl-1-propanone]

• CAT Number: M014362
• CAS Number: 474510-57-1
• Molecular Formula: C21H24O4
• Molecular Weight: 340.42
• Purity: ≥95%
• Synonyms: 1,1′-(Methylene-di-4,1-phenylene)bis[2-hydroxy-2-methyl-1-propanone];2-Hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)-benzyl]-phenyl}-2-methyl-propan-1-one;former IRGACURE 127;OMNIRAD 127
• Storage: -20°C
• IUPAC Name: 2-hydroxy-1-[4-[[4-(2-hydroxy-2-methylpropanoyl)phenyl]methyl]phenyl]-2-methylpropan-1-one
• InChI: InChI=1S/C21H24O4/c1-20(2,24)18(22)16-9-5-14(6-10-16)13-15-7-11-17(12-8-15)19(23)21(3,4)25/h5-12,24-25H,13H2,1-4H3
• InChIKey: PCKZAVNWRLEHIP-UHFFFAOYSA-N
• SMILES: CC(C)(C(=O)C1=CC=C(C=C1)CC2=CC=C(C=C2)C(=O)C(C)(C)O)O

1,1′-(Methylene-di-4,1-phenylene)bis[2-hydroxy-2-methyl-1-propanone]（Cat No.:M014362）, commonly known as bisacylphosphine oxide (BAPO), is a photoinitiator used extensively in the polymer industry. This chemical compound features two acylphosphine oxide groups connected by a methylene link between two benzene rings. The structure of BAPO allows it to absorb UV light and initiate the polymerization of resins upon exposure, making it crucial for curing UV-reactive materials such as coatings, adhesives, and inks. Its effectiveness in initiating rapid polymerization without requiring heat makes it particularly valuable in applications demanding quick setting times and high resolution, like 3D printing and microfabrication.