Fluorine → Trifluoromethanesulfonic anhydride

Participants

Reaction Steps

Then, the first distillation of Example 1 was repeated, thereby to obtain 118.5 kg of trifluoromethanesulfonic acid anhydride which is colorless and transparent. By chemical analysis, this first distillate was found to have a purity of 92 wt % and contains 6 wt % of trifluoromethanesulfonic acid ester, 2 wt % of trifluoromethanesulfonic acid, 60 wt ppm of phosphorus, and 640 wt ppm of free fluorine. The amount of trifluoromethanesulfonic acid anhydride produced by the reaction was 109.0 kg, and the yield was 58%, based on the amount of trifluoromethanesulfonic acid.

Provenance & Evidence