Dimethylsulfoxide (dmso) purification process

C - Chemistry – Metallurgy – 07 – C

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C07C 317/04 (2006.01) C07C 315/06 (2006.01)

Patent

CA 2235770

Pour purifier un diméthylsulfoxyde (DMSO), on met ce DMSO en contact avec une résine échangeuse d'ions de type sulfonique sous forme -SO3NH4, puis on sépare le DMSO de la résine. Le DMSO ainsi obtenu a une teneur en cation fer inférieure à 1 ppb, une teneur en cation sodium inférieure à 2 ppb, et il est particulièrement adapté notamment par une utilisation dans l'industrie pharmaceutique et électronique.

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