Synonyms: Ethylenephosphonate ((C2H4O2)HPO) (6CI,7CI); Phosphonic acid, cyclic ethylene ester(8CI); Ethylene glycol, cyclic phosphonate (8CI); 2-Oxo-1,3,2-dioxaphospholane;2H-1,3,2-Dioxaphospholan-2-one; Ethylene cyclic phosphite; Ethylene glycolcyclic phosphite; Ethylenephosphite ((C2H4O2)(HO)P)