1,1,2,2,3,3,4,4,5,5,5-Undecafluoro-1-pentanesulfonic acid 1-Pentanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,5-undecafluoro- 2706-91-4 EINECS 220-301-2 Perfluoropentane-1-sulphonic acid