== Egenskaber ==
C<sub>8</sub>F<sub>17</sub>-delen i PFOS er [[hydrofob]]isk og [[lipofob]]isk ligesom andre [[fluorcarboner]], mens [[sulfonsyre]]/[[sulfonat]]-gruppen tilføjer [[Kemisk polaritet|polaritet]]. PFOS er en usædvanlig stabil forbindelse i både industrielle applikationer og i miljøet på grund af virkningen af carbon-fluorbindingerne. PFOS er en fluor-[[surfaktant]] som sænker overfladespændingen mere end kulbrinte-surfaktanter gør. Opmærksomheden er typisk fokuseret på den ligekædede isomer (n-PFOS), der er dominerende i kommercielle blandinger og miljøprøver, men der er 89 lineære og forgrenede [[congener]]e, der forventes at have forskellige fysiske, kemiske og toksikologiske egenskaber.<ref name=Rayne2008>{{cite journal
|vauthors=Rayne S, Forest K, Friesen KJ | s2cid =24102057
| title =Congener-specific numbering systems for the environmentally relevant C1 through C8 perfluorinated homologue groups of alkyl sulfonates, carboxylates, telomer alcohols, olefins, and acids, and their derivatives
| journal =Journal of Environmental Science and Health, Part A
| volume =43 |pages=1391–1401 |year=2008
| doi =10.1080/10934520802232030
| pmid =18780216
| issue =12}}</ref><ref name=Rayne2009>{{cite journal
|vauthors=Rayne S, Forest K, Friesen KJ | s2cid =54467859 
| title =Estimated bioconcentration factors (BCFs) for the C1 through C8 perfluorinated alkylsulfonic acid (PFSA) and alkylcarboxylic acid (PFCA) congeners 
| journal =Journal of Environmental Science and Health, Part A
| volume =44 |pages=598–604
| year =2009 |doi=10.1080/10934520902784641
| issue =6}}</ref><ref name=Rayne2009b>{{cite journal
|vauthors=Rayne S, Forest K, Friesen KJ | s2cid =30589788
| title =Linear free energy relationship based estimates for the congener specific relative reductive defluorination rates of perfluorinated alkyl compounds
| journal =Journal of Environmental Science and Health, Part A
| volume =44 |pages=866–879
| year =2009 |doi=10.1080/10934520902958625
| pmid =19799056
| issue =9}}</ref><ref name=Rayne2009c>{{cite journal
|vauthors=Rayne S, Forest K, Friesen KJ | s2cid =30352428
| title =Estimated congener specific gas phase atmospheric behavior and fractionation of perfluoroalkyl compounds: Rates of reaction with atmospheric oxidants, air-water partitioning, and wet/dry deposition lifetimes
| journal =Journal of Environmental Science and Health, Part A
| volume =44 |pages=936–954
| year =2009 |doi=10.1080/10934520902996815
| pmid =19827486
| issue =10}}</ref><ref name=Rayne2009d>{{cite journal
|vauthors=Rayne S, Forest K | s2cid =22128445
| title =Perfluoroalkyl sulfonic and carboxylic acids: A critical review of physicochemical properties, levels and patterns in waters and waste waters, and treatment methods
| journal =Journal of Environmental Science and Health, Part A
| volume =44 |pages=1145–1199
| year =2009 |doi=10.1080/10934520903139811
| pmid =19847705
| issue =12}}</ref><ref name=Rayne2009e>{{cite journal
|vauthors=Rayne S, Forest K | s2cid =23123890
| title =Congener specific organic carbon normalized soil and sediment-water partitioning coefficients for the C1 through C8 perfluoroalkyl carboxylic and sulfonic acids
| journal =Journal of Environmental Science and Health, Part A
| volume =44 |pages=1374–1387
| year =2009 |doi=10.1080/10934520903217229
| pmid =20183495
| issue =13| url =http://precedings.nature.com/documents/3011/version/2
}}</ref><ref name=Rayne2009f>{{cite journal
|vauthors=Rayne S, Forest K | title =An assessment of organic solvent based equilibrium partitioning methods for predicting the bioconcentration behavior of perfluorinated sulfonic acids, carboxylic acids, and sulfonamides
| journal =Nature Precedings
| year =2009 
| url = http://precedings.nature.com/documents/3256/version/1 
| hdl = 10101/npre.2009.3256.1| doi =10.1038/npre.2009.3256.1
| doi-access =free}}</ref><ref name=Rayne2009g>{{cite journal
|vauthors=Rayne S, Forest K | title =A comparative assessment of octanol-water partitioning and distribution constant estimation methods for perfluoroalkyl carboxylates and sulfonates
| journal =Nature Precedings
| year =2009 |doi=10.1038/npre.2009.3282.2 | doi-access =free }}</ref>
Samfund Kemi Miljø_og_samfund Teknologi