Synonyms: Ether,heptafluoropropyl 1,2,2,2-tetrafluoroethyl (7CI,8CI);1,1,1,2,2,3,3-Heptafluoro-3-(1,2,2,2-tetrafluoroethoxy)propane;1,2,2,2-Tetrafluoroethyl heptafluoropropyl ether; Du Pont E 1; Freon E 1;Heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether