Trade name FC-99 Chemical name Perfluoroalkylsulfoamide CAS No.: 70225-14-8 Structure formula CF3(CF2)7SO2NHCH3 Molecular formula C9H4F17NO2S Molecular weight 514 Assay 95% Appearance White or yellowish power solid melting point 145-150°C Application It is a perfluoro anion surfactant the the important intermediate for perfluoro surfactants.