METHOD OF PURIFYING DIMETHYL SULFOXIDE
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United States of America Patent
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Issued Date -
Mar 24, 2016
app pub date -
Apr 22, 2014
filing date -
Apr 30, 2013
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Abstract
A method of purifying dimethyl sulfoxide economically and at good yield satisfies the specifications of the United States Pharmacopoeia and reduces odor. The method includes distilling a solution having 35 parts by weight or more of water admixed per 100 parts by weight of raw dimethyl sulfoxide.
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