FRD-903
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| Surname | FRD-903 | ||||||||||||||||||
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| Molecular formula | C 6 HF 11 O 3 | ||||||||||||||||||
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| Molar mass | 330.05 g mol −1 | ||||||||||||||||||
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| Authorization procedure under REACH |
Of particular concern: there are likely to be serious effects on human health and the environment |
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||||||||
FRD-903 is a chemical compound that belongs to the per- and polyfluorinated alkyl compounds . In the GenX process , the ammonium carboxylate salt - ammonium 2,3,3,3-tetrafluoro-2- (heptafluoropropoxy) propanoate - which is called FRD-902, is used as an inert processing aid and a substitute for perfluorooctanoic acid (PFOA). FRD-902 is made from hexafluoropropylene oxide.
FRD-903 is not biodegradable and is not hydrolyzed by water . It has been detected in river water, sediment and drinking water . In 2019, FRD-903, its salts and halides were added to the list of substances of very high concern for approval .
The chemical is the subject of a documentary - GenX: a Chemical Cocktail .
Individual evidence
- ↑ a b Entry on 2,3,3,3-tetrafluoro-2- (1,1,2,2,3,3,3, heptafluoropropoxy) propanoic acid (~ 90%) at Toronto Research Chemicals , accessed on 17. December 2018 ( PDF ).
- ↑ a b Entry in the SVHC list of the European Chemicals Agency , accessed on July 29, 2019.
- ↑ External identifiers of or database links for ammonium 2,3,3,3-tetrafluoro-2- (heptafluoropropoxy) propanoate : CAS number: 62037-80-3, EC number: 700-242-3, ECHA -InfoCard: 100.124.803 , PubChem : 51342034 , ChemSpider : 26235356 , Wikidata : Q29388239 .
- ↑ a b Rijksinstituut voor Volksgezondheid en Milieu : Evaluation of substances used in the GenX technology by Chemours, Dordrecht , 2016 ( PDF ).
- ↑ a b Cheryl Hogue: What's GenX still doing in the water downstream of a Chemours plant? In: Chemical & Engineering News . tape 96 , no. 7 , 2018 ( acs.org ).
- ↑ Mei Sun, Elisa Arevalo, Mark Strynar, Andrew Lindstrom, Michael Richardson, Ben Kearns, Adam Pickett, Chris Smith, Detlef RU Knappe: Legacy and Emerging Perfluoroalkyl Substances Are Important Drinking Water Contaminants in the Cape Fear River Watershed of North Carolina . In: Environmental Science & Technology Letters . tape 3 , no. 12 , 2016, p. 415-419 , doi : 10.1021 / acs.estlett.6b00398 .
- ↑ Cheryl Hogue: Fluoroethers taint sediments . In: Chemical & Engineering News . tape 96 , no. 15 , 2018, doi : 10.1021 / cen-09615-polcon2 .
- ^ GenX: a Chemical Cocktail. IMDB, accessed July 20, 2020 .
- ^ GenX: A Chemical Cocktail. Retrieved July 20, 2020 (American English).