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 images | 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 | Corrosive (C) |
| R-phrases | R34[3] |
| Except where noted otherwise, data is 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] While PFBS is expected to be persistent in the environment, multiple studies indicate that PFBS is neither toxic nor bioaccumulative.[5]
3M markets surfactant with PFBS in two fluorosurfactants.[5]
See also
- PFOA
- PFNA
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.
- ↑ 5.0 5.1 5.2 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.