Photoinitiator 651, CAS No.: 24650-42-8
Photoinitiator 651 is a highly efficient Type I radical photoinitiator with the chemical name 2,2-Dimethoxy-1,2-diphenylethan-1-one. It is commonly known as Benzil Dimethyl Ketal, BDK, DMPA, Irgacure 651 and Omnirad 651.
Chemical Name: 2,2-Dimethoxy-1,2-diphenylethan-1-one
IUPAC Name: 2,2-Dimethoxy-1,2-diphenylethan-1-one
Alternative Chemical Name: 2,2-Dimethoxy-2-phenylacetophenone
Alternative Name: Benzil Dimethyl Ketal
Common Names: Photoinitiator 651, PI 651, BDK, DMPA, Irgacure 651, Omnirad 651, Omnirad BDK, Speedcure BKL, Benzil Dimethyl Acetal
CAS No.: 24650-42-8
Molecular Formula: C16H16O3
Molecular Weight: 256.30 g/mol
EC No.: 246-386-6
Chemical Class: Benzil Dimethyl Ketal Photoinitiator
Photoinitiator Type: Norrish Type I Radical Photoinitiator

Appearance: White crystals or powder
Purity: 99.9% min
Melting Point: 64 - 67℃
Volatile matter: 0.05% max
Widely used as a photocuring agent in various UV curing systems, suitable for printing Inks, paper and metal paints.
20kg/carton.
3600MT/year.
Store Photoinitiator 651 in a cool, dry and well-ventilated area.
Keep the product in tightly closed original packaging and protect it from direct sunlight, excessive heat and moisture.
Hosea Chem® supplies Photoinitiator 651, CAS 24650-42-8, for industrial UV-curable coatings, printing inks, adhesives, wood coatings, plastic coatings, metal coatings, electronic materials and acrylate-based radiation-curable systems.