Synonyms: Phosphonic acid,(p-phenylenedimethylene)di-, tetraethyl ester (7CI,8CI);Phosphonic acid,[1,4-phenylenebis(methylene)]bis-, tetraethyl ester (9CI);1,4-Bis(diethoxyphosphinylmethyl)benzene;1,4-Xylenebis(diethylphosphonate);NSC 203064;Tetraethyl [1,4-phenylenebis(methylene)]bisphosphonate;Tetraethylp-xylylenebis(phosphonate);Tetraethyl p-xylylenediphosphonate;Tetraethyl a,a'-p-xylenediphosphonate;p-Bis(diethylphosphono)xylene;p-Xylenebis(diethyl phosphonate);p-Xylylenebis(diethyl phosphonate);