Composite photoinitiator of cracking type photoinitiator and hydrogen abstraction type photoinitiator, absorption wavelength: λ max250nm and 332nm Product appearance: Colorless or slightly yellow transparent liquid, below 18. C will crystallize. Viscosity: 90MPa · s (20 ℃) Density: 1.11g/mL (20 ℃) Absorption wavelength/nm: 250nm, 332nm (in methanol solution) 1. Water soluble photoinitiator 2. Compound photoinitiator Photoinitiator 533 (Photoinitiator 500) can be regarded as a complex system of Photoinitiator 504 (184) and Photoinitiator 522 (BP), which is convenient to use and combines the advantages of both. Solubility: In most common organic solvents and acrylic monomers, the solubility is greater than 50g/100g. Characteristics and Applications: Photoinitiator 533 (500) can be used in aqueous UV systems. As a liquid initiator, it is more suitable for dispersion in aqueous systems. Compound photoinitiator, photoinitiator 533 (500) can be regarded as a complex system of 504 (184) and 522 (BP), which is both convenient to use and has the advantages of both. UV curable varnish of acrylic ester series that has been tested for use on paper, metal, and plastic surfaces. It can be used alone or in combination with suitable initiators (such as amines). Low viscosity can reduce the overall viscosity of the formula. As a liquid photoinitiator, photoinitiator 533 is particularly suitable for dispersion in water-based UV formulations. Recommended dosage of photoinitiator 533: 2-6%. Photoinitiator 533 (500