N-ethyl perfluoro-octane-sulfonamide CAS:4151-50-2 Molecular formula: C10 H6F17O2 NS Molecular weight: 527 Appearance: yellowish solid Melting point: 88-90Ë?C Assay: 98%min. ( GC ) Application: Fluoro anion surfactant, it is a good organic fluoro pesticide. Mainly for killing termite, Cockroach and other reptile insects. It also can be used to prepare series of perfluorooctyl surfactant. Toxicity & protection: Referring to the toxicity of fluorochemicals and protection.