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
CAS Number	355-46-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:132448;
ChEMBL	ChEMBL1906987;
ChemSpider	61053;
ECHA InfoCard	100.005.989
EC Number	206-587-1;
PubChem CID	67734;
UNII	ZU6Y1E592S;
CompTox Dashboard (EPA)	DTXSID7040150 ;
	InChI 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;
	SMILES C(C(C(C(F)(F)S(=O)(=O)O)(F)F)(F)F)(C(C(F)(F)F)(F)F)(F)F;
Properties
Chemical formula	C6HF13O3S
Molar mass	400.11 g·mol−1
Density	1.841 g·cm−3
Solubility in water	6.2 mg/L (25 °C)
log P	3.7 (estimated)
Vapor pressure	0.0046 mmHg (estimated)
Acidity (pKa)	−3.45
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H312, H314, H332
Precautionary statements	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	US: Illegal in California and Maine; Restricted internationally under Stockholm Convention;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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.

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