[en] This work consists of bibliographic synthesis regarding the technology of the mono- and di-(4-(1,1,3,3-tetramethylbuthyl) phenyl)) phosphoric acids designed by abbreviation under the names of MOPPA and DOPPA. He united summarily, the different methods of synthesis, of purification, of characterizations and their multiple like applications the extractions, the spectroscopy and various other utilizations. He treats then some different reasons of the instability chemical and thermal of these substances and of its physical properties and chemicals. The process to the POCl3 seems to be a way of priviliges synthesis, probably in reason of its appropriate outputs and some moderate conditions of its realization