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Pyridinium-based ionic liquids (ILs) represent a significant class of specialty chemicals with a diverse range of applications, owing to their unique tunable properties. Among these, N-ethyl pyridinium bis(trifluoromethyl sulfonyl)imide (CAS 712354-97-7) has garnered attention for its distinct physicochemical and electrochemical characteristics. For researchers and product developers, understanding these properties is key to unlocking their potential.
The structure of N-ethyl pyridinium bis(trifluoromethyl sulfonyl)imide, featuring a pyridinium cation and the bis(trifluoromethyl sulfonyl)imide anion (often abbreviated as [NTf2]), confers several advantageous properties. The high purity (typically 99%) of commercially available grades ensures that experimental and industrial results are reliable and reproducible. Key physicochemical parameters include a relatively low viscosity of 39.4 cp and a density of 1.536 g/cm³ at room temperature. Its thermal stability is notable, with a decomposition temperature as high as 408 °C, making it suitable for high-temperature applications where other solvents might degrade.
Electrically, this ionic liquid exhibits promising conductivity of 5.99 mS/cm. This property, combined with its thermal stability, positions it as a strong candidate for use in electrochemical devices. Its wide electrochemical window, although not explicitly detailed in all sources, is a characteristic of many TFSI-based ILs, implying suitability for high-voltage battery electrolytes and supercapacitors. The ability to purchase these compounds from experienced manufacturers and suppliers, often in China, at competitive prices from grams to tons, facilitates their adoption in both research and commercial ventures.
When compared to other ionic liquids, pyridinium-based ILs like N-ethyl pyridinium bis(trifluoromethyl sulfonyl)imide often offer a balance of properties. While some imidazolium-based ILs might have higher conductivity, pyridinium ILs can offer different solubility profiles or thermal characteristics. The availability of such specialized compounds from reliable manufacturers allows industries to tailor material selection to precise application requirements, driving innovation in areas from advanced materials to energy solutions.
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