Thermal behavior analysis as a valuable tool for comparing ionic liquids of different classes was written by Mezzetta, Andrea;Perillo, Vincenzo;Guazzelli, Lorenzo;Chiappe, Cinzia. And the article was included in Journal of Thermal Analysis and Calorimetry in 2019.SDS of cas: 21252-69-7 This article mentions the following:
The thermal behavior of I [R = H, Br; X = Br, NTf2; n = 2, 6; m = 1, 4] and II ILs, belonging to two structurally related families with either bromide or Tf2N as counteranion, was analyzed. For bromide mono- I and dicationic ionic liquids II (DILs), thermal gravimetric anal. showed similar decomposition events, with only small gain in stability for a few members of the latter class. Conversely, all Tf2N DILs displayed higher stabilities (up to 34 K) than the corresponding monocations, thus highlighting the different role played by the two counteranions. Mono- and dicationic ILs bearing a reactive group on the imidazolium substituent resulted instead the least stable ILs studied. Differential scanning calorimetry anal. of most of the (D)ILs only showed glass transition temperatures, a behavior in agreement with the broad liquid range of ILs. The impact of the cationic structure and/or of the type of anion on the above-mentioned transition temperatures were studied. The apparent activation energy (Ea) and the fragility index (m) for some (D)ILs had also been obtained. Finally, a few bromide (D)ILs presented peculiar thermal events. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7SDS of cas: 21252-69-7).
1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. This ring system is present in important biological building blocks, such as histidine and the related hormone histamine.SDS of cas: 21252-69-7
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem