Chemistry:6:2-Fluorotelomersulfonic acid
From HandWiki
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| Names | |
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| Other names
6:2 Fluorotelomer Sulfonate
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3D model (JSmol)
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PubChem CID
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| Properties | |
| C8H5F13O3S | |
| Molar mass | 428.16 g·mol−1 |
| Appearance | White to light brown solid |
| Density | 1.953 g/cm³ (at 20 °C) |
| Melting point | 87 °C (189 °F; 360 K) |
| 658 g/l in water (20 °C) | |
| Acidity (pKa) | 1.31 |
| Hazards | |
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| GHS Signal word | Danger |
| H302, H314, H373 | |
| P260, P264, P264+265Script error: No such module "Preview warning".Category:GHS errors, P270, P280, P301+317Script error: No such module "Preview warning".Category:GHS errors, P301+330+331, P302+361+354Script error: No such module "Preview warning".Category:GHS errors, P304+340, P305+354+338Script error: No such module "Preview warning".Category:GHS errors, P316Script error: No such module "Preview warning".Category:GHS errors, P317Script error: No such module "Preview warning".Category:GHS errors, P319Script error: No such module "Preview warning".Category:GHS errors, 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). | |
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Tracking categories (test):
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]
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]
References
- ↑ "1-Octanesulfonic acid, 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/119688#section=Safety-and-Hazards.
- ↑ "Comparison of the chemical structural formula of 6:2 FTCA/6:2 FTSA and... | Download Scientific Diagram". https://www.researchgate.net/figure/Comparison-of-the-chemical-structural-formula-of-62-FTCA-62-FTSA-and-PFOA-PFOS_fig1_311957588.
- ↑ "zwitterionic carboxybetaine polymer: Topics by Science.gov". https://www.science.gov/topicpages/z/zwitterionic+carboxybetaine+polymer.
- ↑ The use of PFAS and fluorine-free alternatives in fire-fighting foams, 2020, https://echa.europa.eu/documents/10162/28801697/pfas_flourine-free_alternatives_fire_fighting_en.pdf/d5b24e2a-d027-0168-cdd8-f723c675fa98
- ↑ Yang, Shih-Hung; Shan, Libo; Chu, Kung-Hui (2022). "Fate and Transformation of 6:2 Fluorotelomer Sulfonic Acid Affected by Plant, Nutrient, Bioaugmentation, and Soil Microbiome Interactions" (in en). Environmental Science & Technology 56 (15): 10721–10731. doi:10.1021/acs.est.2c01867. PMID 35830472. Bibcode: 2022EnST...5610721Y.
- ↑ Yang, Xiaoling; Huang, Jun; Zhang, Kunlun; Yu, Gang; Deng, Shubo; Wang, Bin (2014). "Stability of 6:2 fluorotelomer sulfonate in advanced oxidation processes: degradation kinetics and pathway". Environmental Science and Pollution Research 21 (6): 4634–4642. doi:10.1007/s11356-013-2389-z. PMID 24352540. Bibcode: 2014ESPR...21.4634Y.
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