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Lithium iodide
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<h2 id="applications">Applications</h2> <p>Lithium iodide is used as a <a href="/facts/Solid-state_electrolyte/8NYPanj6">solid-state electrolyte</a> for high-temperature batteries. It is also the standard electrolyte in <a href="/facts/Artificial_pacemaker/b90Qt8ND">artificial pacemakers</a><a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> due to the long cycle life it enables.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> The solid is used as a <a href="/facts/Phosphor/vTLjrGDE">phosphor</a> for <a href="/facts/Neutron/oRCM1geb">neutron</a> detection.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> It is also used, in a complex with <a href="/facts/Iodine/JlfMecMf">Iodine</a>, in the <a href="/facts/Electrolyte/4YE8bIVa">electrolyte</a> of <a href="/facts/Dye-sensitized_solar_cell/yJsvA64H">dye-sensitized solar cells</a>. </p><p>In <a href="/facts/Organic_synthesis/aprl6Iq7">organic synthesis</a>, LiI is useful for cleaving C-O bonds. For example, it can be used to convert methyl esters to <a href="/facts/Carboxylic_acid/U4xuMosy">carboxylic acids</a>:<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p> RCO2CH3 + LiI → RCO2Li + CH3I <p>Similar reactions apply to <a href="/facts/Epoxide/PLxRI7r1">epoxides</a> and <a href="/facts/Aziridine/r89KuEYb">aziridines</a>. </p><p>Lithium iodide was used as a <a href="/facts/Radiocontrast_agent/JefNS98C">radiocontrast agent</a> for <a href="/facts/CT_scan/NusPJ2S8">CT scans</a>. Its use was discontinued due to renal toxicity. Inorganic iodine solutions suffered from <a href="/facts/Hyperosmolarity/tgtkKAuk">hyperosmolarity</a> and high viscosities. Current <a href="/facts/Iodinated_contrast/WCkoRRyE">iodinated contrast</a> agents are <a href="/facts/Organoiodine_compound/P6LDC4IP">organoiodine compounds</a>.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> </p><p>It is also useful in MALDI imaging mass spectrometry of lipids by adding lithium salts to the matrix solution.<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Lithium_battery/D5yfo8XS">Lithium battery</a></li></ul> <h2 id="external-links">External links</h2> Wikimedia Commons has media related to Lithium iodide. <ul><li><a href="https://www.webelements.com/compounds/lithium/lithium_iodide.html">"WebElements – Lithium Iodide"</a>. Retrieved 2005-09-16.</li> <li><a href="http://physics.nist.gov/cgi-bin/Star/compos.pl?matno=187">"Composition of Lithium Iodide – NIST"</a>. Retrieved 2006-02-03.</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"Lithium iodide" (PDF). ESPI Corp. MSDS. Archived from the original (PDF) on 2008-03-09. Retrieved 2005-09-16. <a href="https://web.archive.org/web/20080309151355/http://www.espimetals.com/msds's/lithiumiodide.pdf" target="_blank">https://web.archive.org/web/20080309151355/http://www.espimetals.com/msds's/lithiumiodide.pdf</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6. <a href="/wiki/ISBN_(identifier)" target="_blank">/wiki/ISBN_(identifier)</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Wietelmann, Ulrich and Bauer, Richard J. (2005) "Lithium and Lithium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH: Weinheim. doi:10.1002/14356007.a15_393. <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Holmes, C. (2007-09-28). "The Lithium/Iodine-Polyvinylpyridine Pacemaker Battery - 35 years of Successful Clinical Use". ECS Transactions. 6 (5): 1–7. Bibcode:2007ECSTr...6e...1H. doi:10.1149/1.2790382. ISSN 1938-5862. S2CID 138189063. <a href="https://iopscience.iop.org/article/10.1149/1.2790382/meta" target="_blank">https://iopscience.iop.org/article/10.1149/1.2790382/meta</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Hanif, Maryam (2008). "The Pacemaker Battery - Review Article". UIC Bioengineering Student Journal. <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Nicholson, K. P.; et al. (1955). "Some lithium iodide phosphors for slow neutron detection". Br. J. Appl. Phys. 6 (3): 104–106. Bibcode:1955BJAP....6..104N. doi:10.1088/0508-3443/6/3/311. <a href="/wiki/Bibcode_(identifier)" target="_blank">/wiki/Bibcode_(identifier)</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Charette, André B.; Barbay, J. Kent and He, Wei (2005) "Lithium Iodide" in Encyclopedia of Reagents for Organic Synthesis, John Wiley & Sons. doi:10.1002/047084289X.rl121.pub2 <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Lusic, Hrvoje; Grinstaff, Mark W. (2013). "X-ray-Computed Tomography Contrast Agents". Chemical Reviews. 113 (3): 1641–66. doi:10.1021/cr200358s. PMC 3878741. PMID 23210836. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878741" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878741</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Petit, Cerruti; Touboul, Laprévote (2011). "MALDI imaging mass spectrometry of lipids by adding lithium salts to the matrix solution". Analytical and Bioanalytical Chemistry. 401 (1): 75–87. doi:10.1007/s00216-011-4814-9. PMC 3878741. PMID 21380605. <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878741" target="_blank">https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3878741</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> </ol>