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Science and Technology of Energetic Materials

Vol.72, No.4 (2011)

Research paper

Influence of dimethyl sulfoxide on exothermic decomposition of peroxide-containing tetrahydrofuran
Noriko Ooizumi, Satoru Yoshino, Mieko Kumasaki, and Atsumi Miyake
p.111-115

Abstract

Tetrahydrofuran (THF), which is known for being susceptible to autoxidation, is often used with dimethyl sulfoxide (DMSO) as mixture solvent. In this study, we investigated the influence of DMSO on the exothermic decomposition of peroxide containing THF, which may lead to an accidental explosion. THF was pressurized by oxygen and kept at a fixed temperature to produce peroxide. Spectroscopic analysis and iodometric titration showed that THF sample contains various peroxides and decomposition products. Thermal analysis with differential scanning calorimetry (DSC) revealed that the time to exothermic decomposition of THF peroxide is shortened in the presence of DMSO. The activation energy, which was calculated on the assumption that the mechanism of the reaction does not vary depending on temperature, was found to decrease by mixing with DMSO. This result agrees with the fact that the time to exothermic decomposition of peroxide is shortened in the presence of DMSO.

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Keywords

peroxide, mixing hazard, tetrahydrofuran, dimethylsulfoxide, exothermal decomposition

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