METHOD FOR SALVAGING OF TOXIC PHOSPHOROUS-CONTAINING ORGANIC COMPOUNDS Russian patent published in 2003 - IPC

FIELD: organic chemistry, in particular, method for salvaging of toxic phosphorous-containing organic compounds, in particular, sarin and soman. SUBSTANCE: description is given of the method for salvaging of toxic phosphorous-containing organic compounds of isopropyl ether of methylfluorophosphinous acid (sarin) and pinacolyl ether of methyl-fluorophosphinous acid (soman) preliminarily processed by monoethanolamine, characterized by the fact that the reaction masses formed as a result of detoxication get salvaged in four stages; in the first stage of which processing of the reaction mass is effected by boiling of it with 20 to 40% aqueous solution of potash alkali during 1 to 48 hours at a molar relationship of KOH: fluoro hydromonoethanolamine within 1:1 to 3:1; in the second stage distilling of the aqueous solution of monoethanolamine, isopryl or pinacolinolamine alcohol is performed in the present of xylene as an ascotropic agent; in the third stage processing of potassium salts of methylfluorophosphoric and hydrogen fluoride acids by an aqueous solution of calcium hydroxide at a concentration of 10 to 20 mass percentage at a molar relation of ions Ca⁺² to ions of F within 1:1 to 3:1 is accomplished; in the fourth stage calcination of calcinated salts at a temperature of 700 to 1200 is performed at least for 0.5 hr. EFFECT: reduced risk for health of population living near the objects of processing. 4 ex