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2 006 457

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IPC

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Application

5042644/26, 1992-05-20

(22)

Actual filing date

1992-05-20

(45)

Published

1994-01-30

(72)

Inventor

Stepanskij M.L.Torubarov A.I.Bulanov G.A.Kozlov A.P.Martynova I.M.

(73)

Holder

Stepanskij Mark L'Vovich

METHOD OF THIONYL CHLORIDE SYNTHESIS Russian patent published in 1994 - IPC

Abstract RU 2006457 C1

FIELD: organic chemistry. SUBSTANCE: thionyl chloride is synthesized by interaction of phosphorus trichloride with chlorine and with sulfur dioxide in fractionating column. Phosphorus trichloride is fed to the middle part of column, and chlorine and sulfur dioxide - to the bottom part of column. Temperature on the upper part of column is 72-75, and on the vat of column is 94-100 C. Thionyl chloride is taken off as a distillate at concentration 95-97 % of weight. EFFECT: improved method of synthesis. 1 tbl

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RU 2 006 457 C1

Authors

Stepanskij M.L.

Torubarov A.I.

Bulanov G.A.

Kozlov A.P.

Martynova I.M.

Dates

1994-01-30—Published

1992-05-20—Filed

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