Title:
METHOD FOR PREVENTING DECOMPOSITION OF DIMETHYL SULFOXIDE
Document Type and Number:
WIPO Patent Application WO/2017/064910
Kind Code:
A1
Abstract:
The present invention is a method for preventing the decomposition of dimethyl sulfoxide, said method comprising adding sodium carbonate in an amount of 0.0005 to 2 g relative to 100 g of dimethyl sulfoxide contained in a dimethyl sulfoxide-containing liquid under an inert gas atmosphere.
According to the present invention, it becomes possible to produce high-purity dimethyl sulfoxide when a dimethyl sulfoxide-containing liquid is distilled. According to the present invention, it also becomes possible to prevent the deterioration in quality of dimethyl sulfoxide when dimethyl sulfoxide is stored for a long period during the summer months or when dimethyl sulfoxide that is frozen during the winter months is heated for the purpose of melting the frozen dimethyl sulfoxide.
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Inventors:
MURANO HARUO (JP)
SHIBAYAMA KATSUHIRO (JP)
SHIBAYAMA KATSUHIRO (JP)
Application Number:
PCT/JP2016/073242
Publication Date:
April 20, 2017
Filing Date:
August 08, 2016
Export Citation:
Assignee:
TORAY FINECHEMICALS CO LTD (JP)
International Classes:
C07C315/06; C07C317/04
Foreign References:
| JP2015145359A | 2015-08-13 | |||
| JPS4312128B1 | ||||
| JP2014224105A | 2014-12-04 |
Other References:
SANTOSUSSO M. THOMAS ET AL.: "Acid Catalysis in Dimethyl Sulfoxide Reactions. A Generally Unrecognized Factor", J. ORG. CHEM., vol. 41, no. 16, 1976, pages 2762 - 2768
Attorney, Agent or Firm:
ICHIJO, Chikara (JP)
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