1,1,2,2,3,3,4,4,5,5,5-Undecafluoropentane-1-sulfonic acid, potassium salt 1-Pentanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,5-undecafluoro-, potassium salt 3872-25-1 EINECS 223-394-8 Potassium perfluoropentane-1-sulphonate