Synthesis and characterization of some new polyhydrazides by direct polycondensation in ionic liquid was written by Adbolmaleki, Amir. And the article was included in Iranian Polymer Journal in 2007.Quality Control of 1-Methyl-3-propylimidazolium Chloride This article mentions the following:
A series of new polyhydrazides were obtained by direct polycondensation of 4,4′-diphenyl sulfone dicarboxylic acid with dihydrazides in ionic liquids (ILs) as a new class of solvents which have interesting properties such as nonvolatility, high ionic concentration, good thermal stability and non-flammability. Direct polycondensation is successfully proceeded in ILs and tri-Ph phosphite (condensing agent), without any addnl. components, such as LiCl and pyridine. Therefore IL can act as both solvent and catalyst. In this investigation high mol. weight polyhydrazides have been synthesized and their properties such as solubility, and thermal stability were studied. The resulting hydrazide containing polymers exhibited inherent viscosities in 0.26-0.73 dL/g range. All polymers were soluble in polar solvents such as N-Me pyrrolidone and DMSO. The polyhydrazides had glass-transition temperatures (Tg) between 165-210°C. They could be thermally converted into the corresponding poly(1,3,4-oxadiazole)s approx. in the region of 210-330°C, as evidenced by the TGA thermograms. In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8Quality Control of 1-Methyl-3-propylimidazolium Chloride).
1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. Imidazole derivatives generally have good solubility in protic solvents. Simple imidazole derivatives, such as 1H-imidazole, 2-methyl-1H-imidazole, and 1,2-dimethylimidazole, have very high solubility in water. Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).Quality Control of 1-Methyl-3-propylimidazolium Chloride
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem