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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">F-53B</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="de" dir="ltr"><div class="mw-content-ltr mw-parser-output" lang="de" dir="ltr"><table class="wikitable infobox float-right" id="Vorlage_Infobox_Chemikalie" style="font-size:90%; margin-top:0; width:350px;" summary="Infobox Chemikalie">
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<th colspan="2" style="background:#FFDEAD; color:#202122;">Strukturformel
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<td colspan="2" class="hintergrundfarbe-basis skin-invert-image" style="text-align:center;"><span typeof="mw:File"></span>
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<th colspan="2" style="background:#FFDEAD; color:#202122;">Allgemeines
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<td style="width:33%;">Name
</td>
<td>F-53B
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<td>Andere Namen
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<ul><li>Kalium-2-[(6-chlor-1,1,2,2,3,3,4,4,5,5,6,6-dodecafluorhexyl)oxy]-1,1,2,2-tetrafluorethansulfonat</li>
<li>6:2-Cl-PFESA (Säure)<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li></ul>
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<td><a href="Summenformel" title="Summenformel">Summenformel</a>
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<td>C<sub>8</sub>ClF<sub>16</sub>KO<sub>4</sub>S
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<th colspan="2" style="background:#FFDEAD; color:#202122;">Externe Identifikatoren/Datenbanken
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<td colspan="2" style="padding:0;">
<table class="mw-collapsible mw-collapsed wikitable" data-expandtext="+" data-collapsetext="−" style="border-top:none; margin:-1px; width:calc(100% + 2px);">
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<td style="width:33%;"><a href="CAS-Nummer" title="CAS-Nummer">CAS-Nummer</a>
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<td><span title="Untervorlage eingebunden: CASRN"></span><span class="KeinCASLink" title="CAS-Nummer ohne Common-Chemistry-Eintrag">73606-19-6</span><span class="editoronly" style="display:none;"></span>
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<td><a href="PubChem" title="PubChem">PubChem</a>
</td>
<td colspan="2"><a rel="nofollow" class="external text" href="https://pubchem.ncbi.nlm.nih.gov/compound/25210512">25210512</a>
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<td><a href="ChemSpider" title="ChemSpider">ChemSpider</a>
</td>
<td colspan="2"><a rel="nofollow" class="external text" href="https://www.chemspider.com/Chemical-Structure.21442077.html">21442077</a>
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<td style="border-right:1px solid #a2a9b1;"><a href="Wikidata" title="Wikidata">Wikidata</a>
</td>
<td colspan="2"><a href="https://www.wikidata.org/wiki/Q17321574" class="extiw external" title="d:Q17321574">Q17321574</a>
</td></tr></tbody></table>
</td></tr>
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<th colspan="2" style="background:#FFDEAD; color:#202122;">Eigenschaften
</th></tr>
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<td><a href="Molare_Masse" title="Molare Masse">Molare Masse</a>
</td>
<td>570,67 g·<a href="Mol" title="Mol">mol</a><sup>−1</sup>
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<th colspan="2" style="background:#FFDEAD; color:#202122;">Sicherheitshinweise
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<td colspan="2" style="text-align:center"><b><a href="Global_harmonisiertes_System_zur_Einstufung_und_Kennzeichnung_von_Chemikalien" title="Global harmonisiertes System zur Einstufung und Kennzeichnung von Chemikalien">GHS-Gefahrstoffkennzeichnung</a></b><br><i>keine Einstufung verfügbar</i><sup id="cite_ref-NV_2-0" class="reference"><a href="#cite_note-NV-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
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<td colspan="2" style="background:#FFDEAD; color:#202122; font-size:80%; text-align:center; line-height:150%; padding:.25em;">Wenn nicht anders vermerkt, gelten die angegebenen Daten bei <a href="Standardbedingungen" title="Standardbedingungen">Standardbedingungen</a> (0 °C, 1000 hPa).
</td></tr></tbody></table><p><span class="editoronly" style="display:none;"></span>
</p><p><b>F-53B</b> ist das <a href="Kalium" title="Kalium">Kaliumsalz</a> einer Perhalogensulfonsäure und gehört zu den <a href="Per-_und_polyfluorierte_Alkylverbindungen" title="Per- und polyfluorierte Alkylverbindungen">per- und polyfluorierten Alkylverbindungen</a> (PFAS) sowie den Chlor-substituierten <a href="Perfluoralkylethersulfons%C3%A4uren" title="Perfluoralkylethersulfonsäuren">Perfluoralkylethersulfonsäuren</a> (Cl-PFESA).
</p>
<div class="mw-heading mw-heading2"><h2 id="Verwendung">Verwendung</h2></div>
<p>F-53B wird seit den Siebzigerjahren als <a href="Antischleiermittel_(Galvanotechnik)" title="Antischleiermittel (Galvanotechnik)">Antischleiermittel</a> (Nebelunterdrücker) in der chinesischen <a href="Galvanotechnik" title="Galvanotechnik">Galvanotechnik</a> bei der <a href="Verchromung" class="mw-redirect" title="Verchromung">Verchromung</a> eingesetzt.<sup id="cite_ref-Wang_3-0" class="reference"><a href="#cite_note-Wang-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Gegenüber <a href="F-53" title="F-53">F-53</a>, das voll fluoriert ist, bestehen preisliche Vorteile in der Synthese. In der Wasseraufbereitung verhält es sich ähnlich wie das <a href="Anion" title="Anion">Anion</a> der <a href="Perfluoroctansulfons%C3%A4ure" title="Perfluoroctansulfonsäure">Perfluoroctansulfonsäure</a> (PFOS).<sup id="cite_ref-Wang_3-1" class="reference"><a href="#cite_note-Wang-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Seit 1982 kommen auch PFOS-Salze zum Einsatz.<sup id="cite_ref-Wang_3-2" class="reference"><a href="#cite_note-Wang-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Gefahren-_und_Risikobeurteilung">Gefahren- und Risikobeurteilung</h2></div>
<p>Anhand einer globalen <a href="Metaanalyse" title="Metaanalyse">Metaanalyse</a> wurde für F-53B ein <a href="Trophischer_Magnifikationsfaktor" class="mw-redirect" title="Trophischer Magnifikationsfaktor">trophischer Magnifikationsfaktor</a> (TMF) von 3,07 (95-%-<a href="Konfidenzintervall" title="Konfidenzintervall">Konfidenzintervall</a>: 2,41–3,92) ermittelt, was eine hohe <a href="Bioakkumulation" title="Bioakkumulation">Bioakkumulation</a> zeigt.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p><p>F-53B hat eine ähnlich starke <a href="Bindungsaffinit%C3%A4t" class="mw-redirect" title="Bindungsaffinität">Bindungsaffinität</a> zum Leber-Fettsäurebindungsprotein wie PFOS,<sup id="cite_ref-Cheng_5-0" class="reference"><a href="#cite_note-Cheng-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> welches <a href="Bioakkumulation" title="Bioakkumulation">bioakkumulativ</a> ist und in das <a href="Stockholmer_%C3%9Cbereinkommen" title="Stockholmer Übereinkommen">Stockholmer Übereinkommen</a> aufgenommen wurde. Zudem weist F-53B eine mindestens gleich hohe Toxizität auf wie PFOS.<sup id="cite_ref-Cheng_5-1" class="reference"><a href="#cite_note-Cheng-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Wang_3-3" class="reference"><a href="#cite_note-Wang-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Es wurde u. a. im <a href="Blutserum" title="Blutserum">Blutserum</a> von Neugeborenen und in <a href="Fischotter" title="Fischotter">Fischottern</a> aus England gefunden.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Siehe_auch">Siehe auch</h2></div>
<ul><li><a href="Perfluoroctans%C3%A4ure" title="Perfluoroctansäure">Perfluoroctansäure</a> (PFOA)</li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">Fangfang Chen, Shanshan Yin, Barry C. Kelly, Weiping Liu: <i>Chlorinated Polyfluoroalkyl Ether Sulfonic Acids in Matched Maternal, Cord, and Placenta Samples: A Study of Transplacental Transfer.</i> In: <i><a href="Environmental_Science_%26_Technology" title="Environmental Science & Technology">Environmental Science & Technology</a>.</i> 51(11), 2017, S. 6387–6394, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1021/acs.est.6b06049">10.1021/acs.est.6b06049</a></span>.</span>
</li>
<li id="cite_note-NV-2"><span class="mw-cite-backlink"><a href="#cite_ref-NV_2-0">↑</a></span> <span class="reference-text">Dieser Stoff wurde in Bezug auf seine Gefährlichkeit entweder noch nicht eingestuft oder eine verlässliche und zitierfähige Quelle hierzu wurde noch nicht gefunden.</span>
</li>
<li id="cite_note-Wang-3"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-Wang_3-0">a</a></sup> <sup><a href="#cite_ref-Wang_3-1">b</a></sup> <sup><a href="#cite_ref-Wang_3-2">c</a></sup> <sup><a href="#cite_ref-Wang_3-3">d</a></sup></span> <span class="reference-text">Siwen Wang, Jun Huang, Yang Yang, Yamei Hui, Yuxi Ge, Thorjørn Larssen, Gang Yu, Shubo Deng, Bin Wang, Christopher Harman: <i>First Report of a Chinese PFOS Alternative Overlooked for 30 Years: Its Toxicity, Persistence, and Presence in the Environment.</i> In: <i><a href="Environmental_Science_%26_Technology" title="Environmental Science & Technology">Environmental Science & Technology</a>.</i> 47(18), 2013, S. 10163–10170, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1021/es401525n">10.1021/es401525n</a></span>.</span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">Lorenzo Ricolfi, Yefeng Yang, Patrice Pottier, Kyle Morrison, Coralie Williams, Pietro Pollo, Daniel Hesselson, G. Gregory Neely, Matthew D. Taylor, Shinichi Nakagawa, Malgorzata Lagisz: <cite style="font-style:italic">Unravelling the magnitude and drivers of PFAS trophic magnification: a meta-analysis</cite>. In: <cite style="font-style:italic"><a href="Nature_Communications" title="Nature Communications">Nature Communications</a></cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>16</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em"> </span>1</span>, 2025, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>10720</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1038/s41467-025-65746-4">10.1038/s41467-025-65746-4</a></span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rfr_id=info:sid/de.wikipedia.org:F-53B&rft.atitle=Unravelling+the+magnitude+and+drivers+of+PFAS+trophic+magnification%3A+a+meta-analysis&rft.au=Lorenzo+Ricolfi%2C+Yefeng+Yang%2C+Patrice+Pottier%2C+...&rft.date=2025&rft.doi=10.1038%2Fs41467-025-65746-4&rft.genre=journal&rft.issue=1&rft.jtitle=Nature+Communications&rft.pages=10720&rft.volume=16" style="display:none"> </span></span>
</li>
<li id="cite_note-Cheng-5"><span class="mw-cite-backlink">↑ <sup><a href="#cite_ref-Cheng_5-0">a</a></sup> <sup><a href="#cite_ref-Cheng_5-1">b</a></sup></span> <span class="reference-text">Weixiao Cheng, Carla A. Ng: <i>Predicting Relative Protein Affinity of Novel Per- and Polyfluoroalkyl Substances (PFASs) by An Efficient Molecular Dynamics Approach.</i> In: <i>Environmental Science & Technology.</i> 52(14), 2018, S. 7972–7980, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1021/acs.est.8b01268">10.1021/acs.est.8b01268</a></span>.</span>
</li>
<li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text">Nan Sheng, Ruina Cui, Jinghua Wang, Yong Guo, Jianshe Wang, Jiayin Dai: <i>Cytotoxicity of novel fluorinated alternatives to long-chain perfluoroalkyl substances to human liver cell line and their binding capacity to human liver fatty acid binding protein.</i> In: <i><a href="Archives_of_Toxicology" title="Archives of Toxicology">Archives of Toxicology</a>.</i> 92(1), 2018, S. 359–369, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1007/s00204-017-2055-1">10.1007/s00204-017-2055-1</a></span>.</span>
</li>
<li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text">Yingxue Liu, Xuji Zhou, Yiting Wu, Xiaomeng Yang, Yanting Wang, Shuai Li, Xiaoxia Bai, Daniel Schlenk, Weiping Liu: <cite style="font-style:italic">Exposure and Blood–Cerebrospinal Fluid Barrier Permeability of PFASs in Neonates</cite>. In: <cite style="font-style:italic"><a href="Environmental_Science_%26_Technology_Letters" title="Environmental Science & Technology Letters">Environmental Science & Technology Letters</a></cite>. 15. Dezember 2021, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1021/acs.estlett.1c00862">10.1021/acs.estlett.1c00862</a></span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:F-53B&rft.atitle=Exposure+and+Blood-Cerebrospinal+Fluid+Barrier+Permeability+of+PFASs+in+Neonates&rft.au=Yingxue+Liu%2C+Xuji+Zhou%2C+Yiting+Wu%2C+...&rft.btitle=Environmental+Science+%26+Technology+Letters&rft.date=2021-12-15&rft.doi=10.1021%2Facs.estlett.1c00862&rft.genre=book" style="display:none"> </span></span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text">Andreas Androulakakis <i>et al.</i>: <cite style="font-style:italic">Determination of 56 per- and polyfluoroalkyl substances in top predators and their prey from Northern Europe by LC-MS/MS</cite>. In: <cite style="font-style:italic"><a href="Chemosphere_(Zeitschrift)" title="Chemosphere (Zeitschrift)">Chemosphere</a></cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em"> </span>287</span>, 2022, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em"> </span>131775</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1016/j.chemosphere.2021.131775">10.1016/j.chemosphere.2021.131775</a></span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rfr_id=info:sid/de.wikipedia.org:F-53B&rft.atitle=Determination+of+56+per-+and+polyfluoroalkyl+substances+in+top+predators+and+their+prey+from+Northern+Europe+by+LC-MS%2FMS&rft.au=Andreas+Androulakakis+et+al.&rft.btitle=Chemosphere&rft.date=2022&rft.doi=10.1016%2Fj.chemosphere.2021.131775&rft.genre=book&rft.pages=131775&rft.volume=287" style="display:none"> </span></span>
</li>
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