METHOD OF REUSING LEWISITE-TYPE SKIN ABSCESS-EFFECT POISON GASES Russian patent published in 2001 - IPC

Abstract RU 2172196 C2

FIELD: poison disposal. SUBSTANCE: method involves alkali hydrolysis of lewisite with sodium hydroxide solution and is characterized by that hydrolyzed reaction mixture is further oxidized by aqueous solution of hydrogen peroxide at 60-80 C to give sodium arsenate. Resulting solution is concentrated until arsenate ion level arrives at 129 g/kg, cooled to 0-5 C, and sodium arsenate-dodecahydrate is then separated by filtration at pH 13. EFFECT: increased yield of sodium arsenate to 99%. 2 cl, 2 dwg

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RU 2 172 196 C2

Authors

Gormaj V.V.

Prokopenko V.A.

Alimov N.I.

Kuchinskij E.V.

Shapovalov V.N.

Kapashin V.P.

Dates

2001-08-20—Published

1999-01-25—Filed