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Study on Autocatalytic Decomposition of Dimethyl Sulfoxide (DMSO)
Organic Process Research & Development ( IF 3.4 ) Pub Date : 2020-08-20 , DOI: 10.1021/acs.oprd.0c00113
Yoshikuni Deguchi 1, 2 , Masafumi Kono 2, 3 , Yuto Koizumi 2 , Yu-ichiro Izato 2 , Atsumi Miyake 2
Affiliation  

Dimethyl sulfoxide (DMSO) is widely used due to its excellent solvent properties; however, several serious incidents have been reported related to the use of DMSO. DMSO can decompose autocatalytically, but we have no consensus with respect to the chemical structure and function of the autocatalyst. Thermal decomposition of DMSO was carried out in an inert atmosphere, and analysis of the nonvolatile fraction indicated the presence of several organic and inorganic acids. DMSO was believed to act as an oxidizer as well as a reactant in the formation of these acids. The same acids were found in an isothermal heating test, and their concentrations increased over heating time. Addition of acids to DMSO before starting isothermal heating significantly shortened the induction period indicating that the acids generated in situ served as autocatalysts for the thermal decomposition of DMSO.

中文翻译:

二甲基亚砜(DMSO)的自催化分解研究

二甲基亚砜(DMSO)由于其优异的溶剂性能而被广泛使用;但是,已经报道了一些与使用DMSO有关的严重事件。DMSO可以自动催化分解,但是我们对自动催化剂的化学结构和功能尚无共识。DMSO的热分解是在惰性气氛下进行的,对不挥发分的分析表明存在几种有机酸和无机酸。据信DMSO在这些酸的形成中起氧化剂和反应物的作用。在等温加热测试中发现了相同的酸,并且它们的浓度随着加热时间的增加而增加。
更新日期:2020-09-20
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