Perfluorohexanesulfonic acid

Perfluorohexanesulfonic acid
Names
IUPAC name
1,1,2,2,3,3,4,4,5,5,6,6,6-tridecafluorohexane-1-sulfonic acid
Other names
  • PFHxS
  • Perfluorohexane sulfonate
  • Perfluorohexane sulfonic acid
  • Perfluorohexane-1-sulfonic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.005.989 Edit this at Wikidata
EC Number
  • 206-587-1
UNII
  • InChI=1S/C6HF13O3S/c7-1(8,3(11,12)5(15,16)17)2(9,10)4(13,14)6(18,19)23(20,21)22/h(H,20,21,22)
    Key: QZHDEAJFRJCDMF-UHFFFAOYSA-N
  • C(C(C(C(F)(F)S(=O)(=O)O)(F)F)(F)F)(C(C(F)(F)F)(F)F)(F)F
Properties
C6HF13O3S
Molar mass 400.11 g·mol−1
Density 1.841 g·cm−3[1]
6.2 mg/L (25 °C)[1]
log P 3.7 (estimated)[1]
Vapor pressure 0.0046 mmHg (estimated)[2]
Acidity (pKa) −3.45[2]
Hazards
GHS labelling:
GHS05: CorrosiveGHS07: Exclamation mark[1]
Danger
H302, H312, H314, H332
P260, P261, P264, P270, P271, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P363, P405, P501
Pharmacology
Legal status
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Perfluorohexanesulfonic acid (PFHxS) (conjugate base perfluorohexanesulfonate) is a synthetic chemical compound. It is one of many compounds collectively known as per- and polyfluoroalkyl substances (PFASs). It is an anionic fluorosurfactant and a persistent organic pollutant with bioaccumulative properties. Although the use of products containing PFHxS and other PFASs have been banned or are being phased out in many jurisdictions, it remains ubiquitous in many environments and within the general population, and is one of the most commonly detected PFASs.[4]

  1. ^ a b c d "Perfluorohexanesulfonic acid". Pubchem. National Library of MEdicine. Retrieved 22 May 2021.
  2. ^ a b Wang, Zhanyun; MacLeod, Matthew; Cousins, Ian T.; Scheringer, Martin; Hungerbühler, Konrad (2011). "Using COSMOtherm to predict physicochemical properties of poly- and perfluorinated alkyl substances (PFASs)". Environmental Chemistry. 8 (4): 389. doi:10.1071/EN10143. ISSN 1448-2517.
  3. ^ An Act To Stop Perfluoroalkyl and Polyfluoroalkyl Substances Pollution. 130th Maine Legislature, April 15, 2021
  4. ^ Stockholm Convention on Persistent Organic Pollutants (1 October 2019). Risk management evaluation on perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds (addendum) (Report). United Nations Environment Programme. Retrieved 23 May 2021.