Perfluorobutanesulfonic acid

Perfluorobutanesulfonic acid
Names
Preferred IUPAC name
1,1,2,2,3,3,4,4,4-Nonafluorobutane-1-sulfonic acid
Other names
FC-98

Nonaflate
Nonafluorobutanesulphonic acid
Perfluorobutane sulfonate

PFBS
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.006.176
EC Number
  • 206-793-1
RTECS number
  • EK5930000
UNII
UN number 3094, 3265
  • InChI=1S/C4HF9O3S/c5-1(6,3(9,10)11)2(7,8)4(12,13)17(14,15)16/h(H,14,15,16) Y
    Key: JGTNAGYHADQMCM-UHFFFAOYSA-N Y
  • InChI=1S/C4HF9O3S/c5-1(6,3(9,10)11)2(7,8)4(12,13)17(14,15)16/h(H,14,15,16)
    Key: JGTNAGYHADQMCM-UHFFFAOYSA-N
  • OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F
Properties
C4HF9O3S
Molar mass 300.10 g/mol
Boiling point 210–212 °C (410–414 °F; 483–485 K)
Hazards
GHS labelling:
Danger
H302, H314
P280, P305+P351+P338, P310
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

Perfluorobutanesulfonic acid (PFBS) is a PFAS chemical compound having a four-carbon fluorocarbon chain and a sulfonic acid functional group. It is stable and unreactive because of the strength of carbon–fluorine bonds. It can occur in the form of a colorless liquid or solid. Its conjugate base is perfluorobutanesulfonate (also called nonaflate) which functions as the hydrophobe in fluorosurfactants.

Since June 2003, 3M has used PFBS as a replacement for the persistent, toxic, and bioaccumulative compound perfluorooctanesulfonic acid (PFOS) in its Scotchgard stain repellents.

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