2-Biphenylyl phenyl phosphate ((C12H90)2(PhO)PO) 597-79-5 Bis((1,1'-biphenyl)-2-yl) phenyl phosphate Phosphen 6 Phosphoric acid, bis((1,1'-biphenyl)-2-yl) phenyl ester Phosphoric acid, bis(2-biphenylyl) phenyl ester