6:2-Fluorotelomersulfonic acid
Chemical compound
From Wikipedia, the free encyclopedia
6:2-fluorotelomersulfonic acid (6:2-FTS) is a chemical compound that belongs to the group of fluorotelomersulfonic acids within the broader class of per- and polyfluorinated alkyl compounds (PFAS). Due to its structural similarity to perfluorooctanesulfonic acid (PFOS), it is also called H4PFOS.[2]
 | |
| Names | |
|---|---|
| Other names
6:2 Fluorotelomer Sulfonate | |
| Identifiers | |
3D model (JSmol) |
|
| ChemSpider | |
| ECHA InfoCard | 100.044.149 |
| EC Number |
|
PubChem CID |
|
| UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
| Properties | |
| C8H5F13O3S | |
| Molar mass | 428.16 g·mol−1 |
| Appearance | White to light brown solid |
| Density | 1.68 g/cm³ (at 20 °C) |
| Melting point | 69.1 °C (156.4 °F; 342.2 K) |
| Boiling point | 238 °C (460 °F; 511 K) |
| 8.55×10−4 mol/L in water (20 °C) | |
| Acidity (pKa) | 1.31 |
| Hazards | |
| GHS labelling:[1] | |
   | |
| Danger | |
| H302, H314, H373 | |
| P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P363, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Production
6:2-Fluorotelomersulfonic acid is produced via telomerization. In addition, it is also formed, for example, from some perfluorocarboxybetaines after their splitting.[3]
Usage
6:2-Fluorotelomersulfonic acid and its derivatives are used as a replacement product for perfluorooctanesulfonic acid (PFOS) or its salts in fire-fighting foams. 6:2-FTS has also been used in the chromium plating industry to reduce mist formation during plating.[4][5][6]