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 | |
| Identifiers | |
375-73-5  59933-66-3 | |
| ChemSpider | 61132  |
| EC Number | 206-793-1 |
| Jmol 3D model | Interactive image |
| PubChem | 67815 |
| 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 | |
| EU classification (DSD) |
Corrosive (C) |
| R-phrases | R34[3] |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| verify (what is ?) | |
| 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.
PFBS has served as a replacement for the persistent, toxic, and bioaccumulative perfluorooctanesulfonic acid (PFOS) in 3M's Scotchgard stain repellents since June 2003.[4][5] PFBS has a much shorter half-life in people than PFOS (a little over one month vs. 5.4 years).[6] PFBS is persistent in the environment. Studies have not yet been specifically conducted to determine safety in humans, but like other fluorinated surfactants, PFBS can be presumed to be an endocrine disrupting compound toxic to humans.
3M markets surfactant with PFBS in two fluorosurfactants.[5]
See also
References
- ↑ "Nonafluorobutanesulphonic acid - 59933-66-3 Catalog of Chemical Suppliers". Retrieved 16 January 2009.
- ↑ Perfluorobutanesulfonic acid in the ChemIDplus database
- ↑ "Safety Data Sheet-Nonafluorobutanesulphonic acid" (PDF). Retrieved 16 January 2009.
- ↑ Ullah, Aziz (October 2006). "The Fluorochemical Dilemma: What the PFOS/PFOA fuss is all about" (PDF). Cleaning & Restoration. Retrieved 16 January 2009.
- 1 2 Renner R (January 2006). "The long and the short of perfluorinated replacements". Environ. Sci. Technol. 40 (1): 12–3. doi:10.1021/es062612a. PMID 16433328.
- ↑ Betts KS (May 2007). "Perfluoroalkyl acids: what is the evidence telling us?". Environ. Health Perspect. 115 (5): A250–6. doi:10.1289/ehp.115-a250. PMC 1867999. PMID 17520044.