Perfluorobutanesulfonic acid

Perfluorobutanesulfonic acid

Names
Preferred IUPAC name Perfluorobutanesulfonic acid
Systematic 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
CAS Number	375-73-5 N 59933-66-3 N
3D model (JSmol)	Interactive image
ChEBI	CHEBI:132446 N
ChemSpider	61132 Y
ECHA InfoCard	100.006.176
EC Number	206-793-1
PubChem CID	67815
RTECS number	EK5930000
UN number	3094, 3265
InChI 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
SMILES OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F
Properties
Chemical formula	C4HF9O3S
Molar mass	300.10 g/mol
Melting point	76 to 84 °C (169 to 183 °F; 349 to 357 K)
Boiling point	211 °C (412 °F; 484 K)
Hazards
EU classification (DSD) (outdated)	Corrosive (C)
R-phrases (outdated)	R34
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

Nonaflate
Nonafluorobutanesulphonic acid
Perfluorobutane sulfonate

Perfluorobutanesulfonic acid (PFBS) is a chemical compound with a four carbon fluorocarbon chain and a sulfonic acid functional group. As an anion it functions as a stable fluorosurfactant because of the strength of carbon–fluorine bonds.

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

PFBS has a much shorter half-life of a little over one month in people than PFOS with 5.4 years. PFBS is persistent in the environment. Studies have not yet been specifically conducted to determine safety in humans.