Similar names: 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, potassium salt (1:1); 1-Butanesulfonic acid, 1,1,2,2,3,3,4,4,4-nonafluoro-, potassium salt (8CI,9CI); Bayowet C 4; Bayowet C 4TP-AC2001; Biowet C 4; Chemguard 411; EF 42; Eftop KFBS; F 114; F 114P; FR 2025; FR 2050; FR 2225; Flutel RM 65; IHT-FR 21; K-NONA; KFBS; KPFBS; Megafac F 114; Megafac F 114P; Megafac F 144P; Megafac F 411; Nanofluorobutanesulfonic acid potassium salt; Nonafluoro-1-butanesulfonate potassium salt; Nonafluorobutanesulfonic acid potassium salt; PFBSA; PPBS; PPFBS; Perfluorobutanesulfonic acid potassium salt; Poatssium perfluorobutanesulfonate; Potassium nonaflate; Potassium nonafluoro-1-butanesulfonate; Potassium nonafluorobutanesulfonate; Potassium perfluoro-1-butanesulfonate; Potassium perfluorobutanesulfonate; Potassium perfluorobutylsulfonate; RM 65; PFBSK; L-PFBS