... resin,uv adhesive and so on Product Name Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxideByname IRGACURE 819Formula ... 131 °CBoiling Point ≥168°C It is applicable to UV-curable varnish and paint systems ,such as ... the trigger effect of photoinitiator depends largely on the different formulations,so the best results ... amount of testing is to get through. Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide