Process for the purification of fluromethyl...

Details Process for the purification of fluromethyl... Process for the purification of fluromethyl...

C - Chemistry, Metallurgy

07

C

C07C 41/38 (2006.01) C07C 41/01 (2006.01) C07C 43/12 (2006.01)

Patent

CA 2710218

A process for purifying crude fluoromethyl 1,1,1,3,3,3-hexafluoroisopropyl ether (sevoflurane). The crude sevoflu-rane is repeatedly washed with water under conditions and for a time sufficient to reduce the level of 1,1, 1,3,3, 3-hexafluoroiso-propanol (IIFIP) to no more than 200 ppm or no more than 100 ppm.

L'invention concerne un procédé de purification d'éther fluorométhyl 1,1,1,3,3,3-hexafluoro-isopropylique (sévoflurane). Le sévoflurane brut est lavé à plusieurs reprises avec de l'eau dans des conditions et pendant une durée suffisantes pour réduire la teneur en 1,1,1,3,3,3-hexafluoro-isopropanol (HFIP) à une valeur inférieure ou égale à 200 ppm ou inférieure ou égale à 100 ppm.

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