tetrafluoromethane

(redirected from Perfluoromethane)

tetrafluoromethane

[¦te·trə¦flu̇r·ō′meth‚ān]
(organic chemistry)
References in periodicals archive ?
The following keywords were used in various combinations: retinal detachment, vitrectomy, intraocular gas, sulfur hexafluoride, S[F.sub.6], perfluoromethane, C[F.sub.4], perfluoroethane, hexafluoroethane, [C.sub.3][F.sub.6], perfluoropropane, octafluoropropane, [C.sub.3][F.sub.8], and complications.
(("retinal detachment"[MeSH]) OR ("vitrectomy"[MeSH])) AND (("gas"[MeSH]) OR ("sulfur hexafluoride"[MeSH]) OR ("perfluoromethane"[MeSH]) OR ("perfluoroethane" [MeSH]) OR ("perfluoropropane"[MeSH]) OR ("octafluoropropane" [MeSH]) OR ("S[F.sub.6]"[Title/Abstract]) OR ("C[F.sub.4]"[Title/Abstract]) OR ("[C.sub.3][F.sub.6]"[Title/Abstract]) OR ("[C.sub.3][F.sub.8]"[Title/Abstract])).
The equipment uses a polymer membrane to capture more than 98 percent of the sulfur hexafluoride, perfluoromethane, and perfluoroethane from the exhaust and then concentrate the gases almost 5,000-fold, to more than 99 percent purity.