Log Abbreviation Name Molecular formula CAS No. Kowb PFBS Perfluorobutanesulfonic acid CF3(CF2)3SO3H 375-73-5 3.90 PFHxS Perfluorohexanesulfonic acid CF3(CF2)5SO3H 355-46-4 5.17 PFOS Perfluorooctanesulfonic acid CF3(CF2)7SO3H 1763-23-1 6.43 PFDS Perfluorodecanesulfonic acid CF3(CF2)9SO3H 335-77-3 7.66 4.44 6:2 FTS 6:2 fluorotelomer sulfonate F(CF2)6CH2CH2SO3- 27619-97-2 FOSA Perfluorooctanesulfonamide CF3(CF2)7SO2NH2 754-91-6 5.62 MeFOSA perfluorooctane sulfonamide CF3(CF2)7SO2NH(CH3) 6.07 N-methyl 6.71 EtFOSA CF3(CF2)7SO2NHC2H5 4151-50-2 N-ethylperfluoro-1-octanesulfonamide 6.00 MeFOSE perfluorooctanesulfonamidoethanol CF3(CF2)7SO2N(CH3)C2H4OH 24448-09-7 N-methyl 6.52 EtFOSE perfluorooctanesulfonamidoethanol 1691-99-2 N-ethyl NA FOSAA Perfluoro-1-octanesulfonamidoacetic acid CF3(CF2)7SO2NHCOOH 2806-24-8 NA MeFOSAA perfluorooctanesulfonamidoacetic acid 2355-31-9 N-methyl NA EtFOSAA acid CF3(CF2)7SO2N(C2H5)COOH 2991-50-6 N-ethylperfluoro-1-octanesulfonamidoacetic
Abbreviation Name Molecular formula CAS No. Log Kowb PFBS Perfluorobutanesulfonic acid CF3(CF2)3SO3H 375-73-5 3.90 PFHxS Perfluorohexanesulfonic acid CF3(CF2)5SO3H 355-46-4 5.17 PFOS Perfluorooctanesulfonic acid CF3(CF2)7SO3H 1763-23-1 6.43 PFDS Perfluorodecanesulfonic acid CF3(CF2)9SO3H 335-77-3 7.66 6:2 FTS 6:2 fluorotelomer sulfonate F(CF2)6CH2CH2SO3- 27619-97-2 4.44 FOSA Perfluorooctanesulfonamide CF3(CF2)7SO2NH2 754-91-6 5.62 MeFOSA N-methyl perfluorooctane sulfonamide CF3(CF2)7SO2NH(CH3) 6.07 EtFOSA N-ethylperfluoro-1-octanesulfonamide CF3(CF2)7SO2NHC2H5 4151-50-2 6.71 MeFOSE N-methyl perfluorooctanesulfonamidoethanol CF3(CF2)7SO2N(CH3)C2H4OH 24448-09-7 6.00 EtFOSE N-ethyl perfluorooctanesulfonamidoethanol 1691-99-2 6.52 FOSAA Perfluoro-1-octanesulfonamidoacetic acid CF3(CF2)7SO2NHCOOH 2806-24-8 NA MeFOSAA N-methyl perfluorooctanesulfonamidoacetic acid 2355-31-9 NA EtFOSAA N-ethylperfluoro-1-octanesulfonamidoacetic acid CF3(CF2)7SO2N(C2H5)COOH 2991-50-6 NA