photoinitiator 819 Cas no:162881-26-7 光引发剂908 基双(2,4,6-**酰基)氧化膦 Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide 分子式(Molecular Formula)C26H27O3P 分子量(Molecular Weight) 418.46 外观: 淡黄色粉末 APPEARANCE :Light yellowish powder 含量/纯度(HPLC):98%min PURITY:98%min 熔点 :131.0-135.0℃ MELTING POINT 131.0-135.0℃ 干燥失重:≤0.8% LOSS ON DRYING :≤0.8% 应用及用途:适用于紫外光固化清漆和色漆系列, Application : Suitable for UV curing varnishes 。