Perfluorooctanesulfonyl fluoride

Perfluorooctanesulfonyl fluoride
POSF molecule
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
3D model (JSmol)
Abbreviations POSF, PFOSF
ChemSpider
ECHA InfoCard 100.005.638 Edit this at Wikidata
EC Number
  • 206-200-6
UNII
  • 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 ☒N
    Key: BHFJBHMTEDLICO-UHFFFAOYSA-N ☒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
  • 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
C8F18O2S
Molar mass 502.12 g/mol
Boiling point 154 °C (309 °F; 427 K)[1]
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).
☒N verify (what is checkY☒N ?)

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.

  1. ^ "Perfluoro-1-octanesulfonyl fluoride". National Institute of Standards and Technology. 1990. p. 1. Retrieved 10 July 2009.