DD301726A9 - LIQUID FOR DETOXIFICATION OF TOXIC SUBSTANCES - Google Patents

Abstract

The invention describes a liquid for the detoxification of toxic substances. The field of application of this liquid is the detoxification of chemical warfare agents and the harmless disposal of pesticides and similar toxic substances. The object of the invention is to have available a liquid with respect to: NSW dependence, detoxification effect, storage stability, bombardment safety, explosion hazard and toxicity in the application, requirements for health, work and fire protection in production, transport and storage has improved properties. The object of this invention is to carry out a detoxification below the permissible standard with a fluid of new composition. According to the invention, the liquid consists of: 25% to 65% of an aliphatic aminoalcohol, preferably 40% 2-aminoethanol 10% to 25% of an alcohol, preferably 16.5% butanol 2% to 6% of an alkali metal, preferably 3.5% sodium 15 % to 45% of a highly polar nucleophilic solvent, preferably 30% dimethyl sulfoxide 1% to 20% of a co-solvent, preferably 10% ethylene glycol monobutyl ether.

Description

Characteristic of the known technical solutions

At present, the detoxification fluid 8 (EFI8 of the NVA of the GDR) is used for the detoxification of toxic substances. In the EFI8 diethylamine is included as a main ingredient. The diethylamine is volatile. The vapors are a respiratory poison. It forms explosive mixtures with the air.

These characteristics (according to the health, work and fire safety assessments) are used to determine the properties and to limit or limit the possible uses of the EFI8.

Direct effects are:

1. Limited shelf life under field conditions:

Due to the high volatility of diethylamine (boiling point 56 degrees Celsius) storage under field conditions is limited.

2. Danger of explosion during use

The diethylamine vapors forming during the application (spraying of the technique) give rise to the risk of fire and explosion in the entire environment (explosion limits for air mixtures 2.2 to 14.9% by volume, explosion class HA, ignition temperature -26 degrees Celsius). A commissioning of electrical systems (for example, starting a car) is not possible.

3. No fire safety of stocks

Due to the high risk of explosion, there is no security when bombarding stocks.

4. Poisoning danger to other units or the population

In the case of special treatment of equipment and equipment by spraying in the terrain, a poisoned section is formed by the toxic diethylamine vapors (MAK value: 50 mg / m ³ ) according to the meteorological situation.

5. NSW dependence of the supply

According to the balance sheet decision, 78.75% of the raw materials are imported from Germany.

Object of the invention

The aim of the invention is to find a detoxification fluid, which lies with the detoxification performance within the standard for the detoxification of toxic substances, and

- storable under field conditions,

- has no risk of explosion during use,

- whose stocks are not completely destroyed by bombardment,

- the use of which does not create a risk of poisoning for the workforce and the population,

- no longer placing high demands on health, work and fire protection during manufacture, storage and transport (wearing full protective gear resp. respirators is only necessary in case of an accident),

- has no NSW dependency.

Explanation of the essence of the invention

The cause of the properties that limit the potential uses of the EFI8 is its component diethylamine.

The object of the invention is to find a detoxifying liquid without diethylamine.

According to the invention the object is achieved in that a liquid for detoxification of toxic substances based on an aliphatic amino alcohols, an alcohol and an alkali metal, further 15% to 45% of a strongly polar solvent and 1% to 20% of a co-solvent contains.

To achieve this object, according to the invention a solution consisting of 25% to 65% of an aliphatic amino alcohols, preferably 40% 2-aminoethanol 10% to 25% of an alcohol, preferably 16.5% butanol

2% to 6% of an alkali metal, preferably 3.5% sodium 15% to 45% of a strongly polar nucleophilic solvent, preferably 30% dimethyl sulfoxide

1% to 20% of a co-solvent, preferably 10% ethylene glycol monobutyl ether found.

AusfOhrungsbelsplel After the solution according to the invention, the following detoxification liquid was prepared:

2-aminoethanol 40.0%

Butanol 16.5%

Sodium 3.5%

Dimethyl sulfoxide 30.0% Ethylene glycol monobutyl ether 10.0% This detoxification fluid achieves the following detoxification performance compared to other detoxification fluids: Detox users take time to complete detox

liquid (below detection limit) in min.

for the following chemical warfare agents VX Soman Yperit

5

15

30 90 h 3

5

DS2 / DMA NATO 5 ORO VRP 15 EF7 / S USSR 15 EF7 NVA of the GDR 4 EFI8 NVA of the GDR 5 EF loud invention 3

Claims (1)

Liquid for detoxifying toxic substances, such as pesticides and chemical warfare agents based on an aliphatic amino alcohol, an alcohol and an alkali metal, characterized in that the liquid further contains 15% to 45%, preferably 30%, of a strongly polar, nucleophilic solvent, preferably dimethyl sulfoxide, and 1% to 20%, preferably 10%, of a co-solvent, preferably a hemi-ether of the general formula C _n H _2n OH-OCR, wherein R is an alkyl radical having 1 to 6 carbon atoms and η is an integer from 1 to 4 , Field of application of the invention The liquid described in the invention is suitable for the detoxification of plant protection products, chemical warfare agents and similar substances. It can be used primarily for detoxification of military equipment and equipment as well as for site detoxification.