The Purification of a DMS0-Water (Dimethyl Sulfoxide) System by Melt Crystallization.
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The main objective of the study was to produce a product of at least 99 mole percent dimethylsulfoxide DMSO from a DMSO-water system. The initial composition of the system was about 90 mole percent DMSO and 10 mole percent water. For every heating rate, from 2.0 Chr to 27.8 Chr, the composition of the product was 98.4 mole percent DMSO or greater. The mass of the product varied for different heating rates, with the faster heating rates generally producing more product. A mathematical model was developed to represent the process by using a quasi-steady state analysis. The model could not be tested against the system because the thermal conductivity of solid DMSO was not known. Therefore, a scale-up of the process could not be completed.
- Organic Chemistry