397726 Calorimetric Study of the Exothermic Decomposition of Dimethyl Sulfoxide

Tuesday, April 28, 2015: 2:00 PM
Ballroom F (Austin Convention Center)
B. Todd Brandes, PICA, SI Group, Orangeburg, SC and Dan Smith, Research and Technology, Albemarle Corporation, Baton Rouge, LA

Dimethyl sulfoxide (DMSO) is a widely-used solvent often employed for a variety of organic syntheses. It is stable at room temperature, can dissolve many types of organic materials, and is miscible in water.  However, upon heating in a closed system under conditions typically achievable in a commercial chemical plant, DMSO undergoes significantly exothermic and hazardous decomposition which could realistically lead to a pressure vessel explosion unless an adequate pressure relief system were installed. This study provides calorimetry data from several apparatus and methods to characterize the decomposition. The results are described, and a simplified kinetic model is presented to correlate the data, useful for relief system design.

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See more of this Session: How to Measure the Right Data for Reaction Systems
See more of this Group/Topical: Global Congress on Process Safety