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2 078 029

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C1

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IPC

(21) (22)

Application

94018604/25, 1994-05-23

(22)

Actual filing date

1994-05-23

(45)

Published

1997-04-27

(72)

Inventor

Zmeeva E.V.Kalashnikov A.L.Korobtsev V.P.Marinenko E.P.

(73)

Holder

Sibirskij Khimicheskij Kombinat

METHOD OF SELENIUM PRODUCING Russian patent published in 1997 - IPC

Abstract RU 2078029 C1

FIELD: chemical technology, inorganic chemistry. SUBSTANCE: method involves interaction of selenium hexafluoride with reducing reagent: with 25-30% hydrazine hydrate aqueous solution at mass ratio selenium hexafluoride and hydrazine hydrate solution = 1:(10-14), acidification of the prepared mixture with hydrochloric acid to pH = 1-3, keeping the acidified mixture at 60-90 C for 1-1.5 h and isolation of the end product from its. Yield of the end product is 99.6-99.8% of theoretical value. EFFECT: increased yield of the end product. 4 cl

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RU 2 078 029 C1

Authors

Zmeeva E.V.

Kalashnikov A.L.

Korobtsev V.P.

Marinenko E.P.

Dates

1997-04-27—Published

1994-05-23—Filed

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