Chemical name: 4,4'-Bis(diethylamino) benzophenone CAS No.: 90-93-7 Molecular formula:C21H28N2O Molecular weight: 324 Appearance: Pale yellow powder Purity, %: 99 min. Melting point, degree: 93 - 95 Moisture, %: 0.1max. Photoinitiator EMK is an effective photoinitiator for curing pigmented and clear UV-curable, acrylated-based coatings, adhesives and inks. It has a strong absorption between 350 to 400 nm which makes it most suitable for pigmented and black UV coating.