{"product_id":"cbessl","title":"SL (Sulfolane, \u003e99.9%) as Battery Electrolyte Solvent, 100-500 g\/bottle, CBESSL","description":"\u003cp\u003eSulfolane (tetramethylene sulfone, C4H8O2S, Mw = 120.17 g\/mol) is a cyclic sulfone solvent widely employed in high-voltage, non-flammable, and thermal-abuse-tolerant battery electrolytes. Its prominence stems from its extreme oxidative stability (\u0026gt;5.0–5.5 V vs. Li\/Li+), exceptional thermal tolerance (boiling point ~ 285°C, flash point ~ 165°C, and strong dielectric polarity. It is primarily deployed in 5 V spinel cathodes (LiNi0.5Mn1.5O4 \/ LNMO), high-voltage sodium-ion systems, and abuse-resistant lithium cells. However, pure sulfolane has severe physical and electrochemical bottlenecks: a high melting point (27.5°C), high dynamic viscosity and poor native SEI film-formation on graphite and alkali-metal anodes.\u003c\/p\u003e\n\u003cp\u003eThe underlying mechanisms of high voltage oxidation resistance mainly from: The sulfur atom in sulfolane is in a high +6 oxidation state bonded to two strongly electronegative oxygen atoms (-SO2-). This electron-withdrawing configuration substantially pulls electron density away from the five-membered ring, dropping its highest occupied molecular orbital (HOMO) energy level far below that of cyclic carbonates: Prevents spontaneous electron transfer from the solvent into the empty eg orbitals of high-potential cathodes like LiNi0.5Mn1.5O4 (4.9 V), high-cutoff P2-layered sodium oxides (\u0026gt;4.3 V), or LiCoPO4 (4.8 V).Suppresses transition-metal-catalyzed acid decomposition and oxidative CO2 degassing.\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 339.2px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003ePart Number\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eCBESSL (C-BES-SL)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eCAS\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e126-33-0\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 138px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 138px;\"\u003e\u003cem\u003eChemical Formula\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 138px;\"\u003e\n\u003cp\u003e\u003cspan\u003eC\u003c\/span\u003e\u003csub\u003e4\u003c\/sub\u003e\u003cspan\u003eH\u003c\/span\u003e\u003csub\u003e8\u003c\/sub\u003e\u003cspan\u003eO\u003c\/span\u003e\u003csub\u003e2\u003c\/sub\u003e\u003cspan\u003eS\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESSL_chemical_structure_100x100.png?v=1789263873\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\u003cem\u003eAppearance\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003eColorless Liquid\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 35.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 35.6px;\"\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\u003cem\u003ePurity\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 35.6px;\"\u003e\n\u003cp\u003e\u003cspan\u003e99.9% (Battery Grade)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003eMolecular Weight\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e120.17 g\/mol\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003eBoiling Point\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e285 °C (lit.)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 33.6331%; height: 19.6px;\"\u003e\u003cem\u003ePackage Size\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.0072%; height: 19.6px;\"\u003e\u003cspan\u003e100 g, 200 g, and 500 g\/bottle\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e: Please store the SL solvent in a dry place (glovebox or dryroom is the best option)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e: \u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S1385894724103488\"\u003e\u003cspan\u003eJ. Zhou, et al. Anion-regulated weakly solvation sulfolane-based electrolyte towards high-voltage lithium metal batteries, Chemical Engineering Journal, 2025, 504, 158857\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003ca href=\"https:\/\/pubs.acs.org\/nalefd\/article-abstract\/22\/2\/815\/1387495\/Nonvolatile-and-Nonflammable-Sulfolane-Based?redirectedFrom=fulltext\"\u003eZ. Li, et al. Nonvolatile and Nonflammable Sulfolane-Based Electrolyte Achieving Effective and Safe Operation of the Li–O2 Battery in Open O2 Environment, Nano Lett. (2022) 22 (2): 815–821.\u003c\/a\u003e \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"MKL","offers":[{"title":"100 g","offer_id":48342993731814,"sku":"CBESSL100","price":79.0,"currency_code":"USD","in_stock":true},{"title":"200 g","offer_id":48342993764582,"sku":"CBESSL200","price":129.0,"currency_code":"USD","in_stock":true},{"title":"500 g","offer_id":48342993797350,"sku":"CBESSL500","price":279.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CBESSL_main.jpg?v=1789263874","url":"https:\/\/echemsupplies.com\/products\/cbessl","provider":"EChem Supplies","version":"1.0","type":"link"}