DD299458A7 - DETOXIFICANT WITH UNIVERSAL EFFECT AGAINST CHEMICAL COMBATIVE SUBSTANCES - Google Patents

Abstract

The detoxifying agent with universal action against chemical warfare agents is suitable for the detoxification of military and civilian technical means, of buildings and Straszen as well as of laboratory Gefaeszen. It is a universally applicable non-aqueous detoxification fluid of high reactivity, consisting of available or technically easily accessible starting materials. By reducing the amine content and substituting it with more suitable compounds, the alkali alkoxide content could be increased up to 2.6 moles of 1. It has been found that a solution of * mole 1 sodium in 10-60 * aminoalcohol (dimethylaminoethanol), 0-20 * alcohol and 20-80 * alkylcaprolactam detoxify Yperit, sarin and VX chemical warfare agents. To the proposed detoxification agent can be added up to 25 * gasoline or cyclohexane as co-solvent.

Description

Field of application of the invention

The invention relates to novel liquid detackifiers with universal action against chemical warfare agents from military and civilian technical means, such as armored and unarmored vehicles, aircraft, ships and rail vehicles; on facilities such as buildings, roads, runways and on or in laboratory vessels, as well as against analogous toxic compounds.

Characteristic of the known readings

It is known that (1) sodium hydroxide solutions of 2-methoxyethanol mixed with various amines (JBJACKSON, US Pat. No. 3,079,346 issued 04.05.1960) and that sodium solutions of ethanol in a mixture of propylenediamine and dimethylaminoethanol (J. E. BUSCH and A. MATTHES, GP GDR 130076 of 30.05.1969) type of chemical warfare agents, sarin and V-agent better detoxify than heretofore known aqueous detoxification fluids.

As amines in addition to the propylenediamine especially ethylenediamine and diethylenetriamine use.

Further be as non-aqueous liquids detoxification (3) solutions from 0.5 to 1 mole of lithium hydroxide or lithium Γ ¹ in mixtures of 50 to 75% monoethanolamine, and 26 to 50% hexylene glycol (BCWOLVERTON, US Pat. 3,634,278. From 11/01/1972) , (4) solutions of 0.05 to 5 moles Γ ^{1 of} a strong base, such as alkali metal hydroxides, Alkalialkoxido, alkali metal phenoxides and quaternary ammonium hydroxides, and mixtures of 30 to 100 parts of dimethyl sulfoxide and 0 to 70 parts of alcohol, glycols and triols (PRSTEYERMARK, US Pat. No. 3,810,842 issued May 14, 1974) and (5) solutions of salicylaldoxime in ethanol with an addition of ethanolamine or sodium ethoxide having a pH of 10 to 12 (GP GDR 209399 of August 14, 1979).

The variants (1), (2), (3) and partly probably also (4) and (5) act due to their Alkalialkoxidgehaltes, but one mole Γ ¹ in these compositions can not exceed and therefore limits their effectiveness. To stabilize the alcoholates also costly measures are required. In addition, the previously proposed or used detoxification from either expensive or difficult to obtain or complicated to produce starting compounds.

Object of the invention

The aim of the invention are universally applicable, nlchtwäßrige detoxification liquids high reactivity for the detoxification of chemical warfare agents or analogous toxic compounds from available or technically readily available starting materials.

Explanation of the essence of the invention

The object of the invention is to find a composition in which by reducing the amine content and substitution by suitable compounds, the alkali oxide content can be increased.

It has been found that a solution of at least 0.5 mole I ' ¹ up to 2.6 mol Γ ¹ metallic sodium in 10 to 60Vol .-% amino alcohol, preferably dimethylaminoethanol, 0 to 20Vol .-% alcohol, eg. As methanol, ethanol or propanol and 20-80Vol .-% alkylcaprolactam, preferably N-methyl-c-caprolactam chemical warfare agents such. B. detoxify Yperit, sarin and V-agent within 5 minutes so that the residual concentrations or the residual poisoning densities only Ve correspond to ¹ A of the required Normative.

At the same time, it has been found that methanol and benzene or cyclohexane as co-solvent can be added to such mixtures up to 25%, without these mixtures lose their detoxifying activity. For this reason, the detoxifying agents can also be prepared as concentrates, which can be diluted only immediately before use. The mixture according to the invention can be prepared with a content of metallic sodium up to 2.6 mol. This allows new optimizations for the manufacture, storage and use of such mixtures.

Ausiührungsbelsplele

I play 1

20 cm ^{3 of} a solution of 20% N-methyl-e-caprolactam, the sodium content of which is 2.5 mol of I " ¹ , detoxifies 560 mg of Yperit

example 1

(a) 20cm ^{3 of} a solution of metallic sodium in a mixture of 60% dimethylaminoethano! and 20% methanol with an addition of 20% N-Mfithvl-F-ranrnlartam. Hera Nutrium content 9 R MnI I ^-1 hntrSnt Antiflames Rfiflmn Ynnrit

(= 28mg cm ~ ³ ) Within 6 minutes. After 5 minutes, only an amount of 0.1 mg (= 0.005 mg cm- ³ ) could be determined which is below the permissible residual concentration, assuming that it is the detoxification of an area, below the permissible residual poisoning density ,

(b) The same results are obtained when the content of sodium is reduced to 0.6 mole% ¹ without changing the solvent concentration.

(c) A mixture with a sodium content of 1.6 mol I ' ¹ consisting of 37.5% dlmetnylaminoethanol, 12.5% methanol and 60% N-methyl-e-caprolactam detoxifies the same starting amount of Yperl after 5 Minutes, so that only 0.06 mg (= 0.003 mg cm ^-3 ) were found.

(d) thin-layer chromatography and biochemistry could no longer be demonstrated for a V-substance after 4 minutes and for sarin after 2 minutes at an amount used of 100 mg in 20 cm ³ for mixtures mentioned under (a), (b) and (c) ,

(e) The decontamination proceeds just as favorably with a mixture of 15% dimethylaminoethanol, 5% methanol and 80% N-methyl-e-caprolactam with a sodium content of 0.65 mole Γ ¹ .

(f) If ethanol or propanol is used instead of methanol, the same results.

Example 2

(a) 20 cm ^{3 of} a solution of metallic sodium in a mixture 37.5% dimethylaminoethanol, 12.5% methanol, 25% N-methyl-e-caprolactam and 25% gasoline with a sodium content of 1.6 mol Γ ¹ detoxifies 560 mg Yperlt (= 28mg cm " ³ ) within 5 minutes After 5 minutes, the residual concentration is still 0.006 mg cm ^-1 " ³ and thus below the permissible residual concentration of 0.016 mg cm " ³ After this time, V-warfare agent and sarin were no longer detectable.

(b) A solution of 0.8 mol sodium Γ ¹ in a mixture of 18.75% of dimethylaminoethanol, 6.25% methanol, 37.5% N-methyl-e-caprolactam and 37.5% gasoline detoxified yperite, V -Kampfstoff and sarin as fast.

(c) At constant sodium content, the detoxifying effect is reduced in a mixture of 18.75% dimethylaminoethanol, 6.25% methanol, 25% N-methyl-e-caprolactam and 50% gasoline so that at the same experimental conditions a residual concentration of Yperit of 0.018 mg crn ~ ³ remains, which corresponds approximately to the normative residual concentration.

Claims (2)

Detoxifying agent with universal action against chemical warfare agents and analogous toxic compounds, characterized by a solution of at least 0.5 mol Γ ¹ up to 2.6 mol Γ ¹ metallic sodium in 10 to 60Vol .-% amino alcohol, preferably dimethylaminoethanol, 0 to 20% by volume of alcohol and 20-80% by volume of alkylcaprolactam, preferably N-methyl-e-caprolacam. Detoxifying agent according to item 1, characterized in that up to 25% of gasoline or cyclohexane is added as co-solvent to the solution mg.