Perfluorobutanesulfonic acid

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Perfluorobutanesulfonic acid
Perfluorobutanesulfonic acid.svg
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
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.006.176
EC Number 206-793-1
RTECS number EK5930000
UN number 3094, 3265
Properties
C4HF9O3S
Molar mass 300.10 g/mol
Melting point 76 to 84 °C (169 to 183 °F; 349 to 357 K) [1]
Boiling point 211 °C (412 °F; 484 K)[2]
Hazards
Corrosive (C)
R-phrases (outdated) R34[3]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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.[4]3M markets surfactant with PFBS in two fluorosurfactants.[5]

PFBS has a much shorter half-life of a little over one month in people than PFOS with 5.4 years.[6] PFBS is persistent in the environment. Studies have not yet been specifically conducted to determine safety in humans.

See also[edit]

References[edit]

  1. ^ "Nonafluorobutanesulphonic acid - 59933-66-3 Catalog of Chemical Suppliers". Retrieved 16 January 2009. 
  2. ^ Perfluorobutanesulfonic acid in the ChemIDplus database
  3. ^ "Safety Data Sheet-Nonafluorobutanesulphonic acid" (PDF). Retrieved 16 January 2009. 
  4. ^ Ullah, Aziz (October 2006). "The Fluorochemical Dilemma: What the PFOS/PFOA fuss is all about" (PDF). Cleaning & Restoration. Retrieved 16 January 2009. 
  5. ^ Renner R (January 2006). "The long and the short of perfluorinated replacements". Environ. Sci. Technol. 40 (1): 12–3. PMID 16433328. doi:10.1021/es062612a. 
  6. ^ Betts KS (May 2007). "Perfluoroalkyl acids: what is the evidence telling us?". Environ. Health Perspect. 115 (5): A250–6. PMC 1867999Freely accessible. PMID 17520044. doi:10.1289/ehp.115-a250.