Perfluorooctanesulfonyl fluoride

Perfluorooctanesulfonyl fluoride
Names
	Preferred IUPAC name 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-Heptadecafluorooctane-1-sulfonyl fluoride
Identifiers
CAS Number	307-35-7 ;
3D model (JSmol)	Interactive image;
Abbreviations	POSF, PFOSF
ChemSpider	9019 ;
ECHA InfoCard	100.005.638
EC Number	206-200-6;
PubChem CID	9388;
UNII	KPV81L86O0 ;
CompTox Dashboard (EPA)	DTXSID5027140 ;
	InChI InChI=1S/C8F18O2S/c9-1(10,3(13,14)5(17,18)7(21,22)23)2(11,12)4(15,16)6(19,20)8(24,25)29(26,27)28 Key: BHFJBHMTEDLICO-UHFFFAOYSA-N ; InChI=1/C8F18O2S/c9-1(10,3(13,14)5(17,18)7(21,22)23)2(11,12)4(15,16)6(19,20)8(24,25)29(26,27)28 Key: BHFJBHMTEDLICO-UHFFFAOYAY;
	SMILES C(C(C(C(C(F)(F)S(=O)(=O)F)(F)F)(F)F)(F)F)(C(C(C(F)(F)F)(F)F)(F)F)(F)F;
Properties
Chemical formula	C8F18O2S
Molar mass	502.12 g/mol
Boiling point	154 °C (309 °F; 427 K)
Related compounds
Related compounds	Perfluorooctanesulfonic acid (PFOS), Perfluorooctanesulfonamide (PFOSA), Perfluorooctanoic acid (PFOA), Perfluorobutanesulfonic acid (PFBS)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Perfluorooctanesulfonyl fluoride (POSF) is a synthetic perfluorinated compound with a sulfonyl fluoride functional group. It is used to make perfluorooctanesulfonic acid (PFOS) and PFOS-based compounds. These compounds have a variety of industrial and consumer uses, but POSF-derived substances ultimately degrade to form PFOS.

Because of environmental concerns over PFOS, 3M ceased POSF use in 2002 and global production plummeted. However, Chinese production grew after 3M's phaseout. As of May 2009, POSF and PFOS are listed as persistent organic pollutants (POPs) included in Annex B of the Stockholm Convention.

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