RU2690356C1 - Bifunctional formula for degassing and disinfecting weapons and military equipment - Google Patents

Abstract

FIELD: weapons; chemistry.

SUBSTANCE: invention relates to the field of degassing and disinfection of surfaces of weapons and military equipment (WME), infected with toxic chemicals (TC) and biological agents (BA), specifically to the creation of bifunctional formulations having degassing and disinfecting properties. Bifunctional formula can be used both at negative and positive ambient temperatures. Recipe includes a chlorictive preparation - trichlorisocyanuric acid dissolved in winter conditions in acetonitrile, and in summer conditions in water together with calcined soda in weight ratio of 1:1 and used in form of 1–2 wt. % solution for degassing and 3-4 wt/ % solution for disinfection.

EFFECT: this composition is relatively simple and contains available components, and application of bifunctional formula for degassing and disinfection of WME objects in the form of water solution at positive temperatures considerably simplifies questions of supply of troops with formulations and reduces volume of their transportation.

1 cl, 1 dwg, 2 tbl

Description

The invention relates to the field of degassing and disinfection of surfaces of weapons and military equipment (IWT) contaminated with toxic chemicals (TX) and biological agents (BC), namely to create bifunctional formulations with degassing and disinfectant properties.

The level of technology

Currently, in accordance with the current Guidelines for Special Treatment, there is a wide range of substances and formulations intended for the degassing and disinfection of the surfaces of objects of weapons and military equipment contaminated with biological agents and toxic chemicals [1]. A significant advantage of them are bifunctional formulations, possessing both degassing and disinfectant properties. These features are present only in those formulations, which include chlorine and oxygenative drugs that can enter with BS and TX in the oxidation and chlorination reactions. The main representatives of bifunctional formulations are:

- based on chloro-active preparations: aqueous solutions of calcium hypochlorite, aqueous and aqueous-polymeric solutions of sodium dichloroiso-cyanuric acid;

- on the basis of oxygenating preparations: solutions of the preparation of SOA containing sodium percarbonate, and a water-polymer formulation VPR-1, which includes potassium fluoride peroxosolvate.

A common disadvantage of the above solutions and formulations is the difficulty of their use in winter conditions at negative ambient temperatures, and the solvent formulation of RD-2 based on organic solvents used instead does not have disinfectant properties. Moreover, the use for decontamination and disinfection of IWT objects of several recipes, including various chemically active components, is economically and practically unprofitable.

Therefore, the development of a bifunctional formulation for the decontamination and disinfection of the external surfaces of weapons and military equipment, used at both positive and negative ambient temperatures, is an urgent task.

The closest to the destination of the present invention is 1.0 ... 1.5% (mass.) An aqueous solution of calcium hypochlorite (GK, DTS GK, NTK or GKSch). One of the drawbacks, as noted earlier, is the limited temperature range of its use for decontamination and disinfection of weapons and military equipment objects (from + 5 ° C and above). In addition, calcium hypochlorite is not soluble in the environment of known organic solvents.

The present invention is to develop a bifunctional formulation for decontamination and disinfection of objects of weapons and military equipment, infected with TX and BS, used both at negative and at positive ambient temperatures.

The task is solved by developing the composition of a bifunctional formulation, including chlorinated preparation - trichloroisocyanuric acid (TCTC), dissolved in winter conditions in acetonitrile, and in summer conditions in water together with soda ash in a mass ratio of 1: 1, and used in the form of 1-2% (mass.) solution for degassing and 3-4% (mass.) solution for disinfection.

This composition is relatively simple and contains accessible components, and the use of a bifunctional formulation for decontamination and disinfection of weapons and military equipment objects in the form of an aqueous solution at positive temperatures greatly simplifies the supply of troops with formulations and reduces the volume of their transportation.

The dissolution of TCTC in water is ensured by the formation of the Na-salt of dichloroisocyanuric acid (Na-salt of DHICC) upon its reaction with sodium carbonate (soda ash). A diagram of the main reactions occurring in the water-soda-TCICC system is shown in Figure 1.

From the analysis of the scheme presented in Figure 1, it follows that the interaction of soda ash with water results in its hydrolysis with the formation of sodium hydroxide and sodium bicarbonate, which is a water-soda system. The addition of TCTCC to this system contributes to its reaction with sodium hydroxide to form the Na-salt of DHICA and hypochlorous acid, which, in turn, when interacting with sodium hydroxide, forms sodium hypochlorite.

An example of the practical implementation (implementation) of the invention

To confirm the possibility of carrying out the invention, experimental studies have been performed to assess the completeness of the degassing of conditional objects contaminated with an organophosphorus toxic substance (FOV) of the O-alkyl-S-2-N, N'-dialkylaminoalkylthiolphosphonate type and the halogenated thioether (TEG), in accordance with the procedures outlined in OTT 7.2.311.1-2009 [2], and on the assessment of sporicidal activity on the test object contaminated with Bacillus anthracis agar culture (strain STI1). These studies were conducted on conditional objects, which are metal plates painted with XB-518 enamel, and a test object, which was used enameled metal, in comparison with the closest intended prototype - 1.5% (mass.) Calcium hypochlorite aqueous solution . In accordance with the “Guidelines for Special Treatment”, the consumption rate of the applied water-based formulations corresponded to 1.0 l / m ² , and on the organic one — 0.5 l / m ² . In this case, the formulations were prepared immediately before use by dissolving the calculated amount of the chloro-active preparation in an appropriate solvent.

Experimental data on the assessment of the completeness of degassing of conditional objects infected with FOV and GTE, after exposure to bifunctional formulations based on HA and TCICC are given in table 1, and according to the assessment of sporicidal activity after surface treatment, the test objects are presented in table 2.

From the analysis of the data presented in Table 1, it follows that in comparison with 1.5% (mass.) Of an aqueous solution of calcium hypochlorite, the proposed composition of a bifunctional water-based formulation for the complete degassing of infected conditional objects is almost at the same level, and the composition of the formulation on organic solvent provides the best efficiency of degassing according to FOV - 12 ... 69 times, and according to TEG - 2 ... 3 times, depending on the content of TCICC.

Analysis of the data presented in Table 2 shows that the proposed composition of the bifunctional formulation has a disinfecting effect on the test objects infected with biological agents exhibiting sporicidal activity.

Example 1. To use 1 liter of a bifunctional water-based formulation containing 2% (mass.) TCACC and 2% (mass.) Soda ash, at positive temperatures, it is prepared by first dissolving 20 g soda ash in 960 g water. After it is completely dissolved, 20 g of trichloroisocyanuric acid are added in portions with constant stirring. The solution formed after the complete dissolution of TCICC can be used for degassing and disinfection by irrigation or by wiping the surface of the object with brushes irrigated with the prepared recipe with a consumption rate of 1.0 to 1.5 l / m ² .

Example 2. To use 1 liter of a bifunctional formulation on an organic basis containing 1% (mass.) TCACC, at negative temperatures, it is prepared by dissolving 7.94 g of TCTCK in 786.00 g of acetonitrile with portion adding and constant stirring, because . The density of acetonitrile is 786 g / cm ³ . The solution formed after the complete dissolution of TCICC can be used for degassing the surfaces of the objects of weapons and military equipment by irrigation with a consumption rate of 0.5 l / m.

Example 3. To use 1 liter of a bifunctional formulation on an organic basis containing 4% (mass.) TCTC, at negative temperatures, it is prepared by dissolving 32.75 g of TCTC in 786 g of acetonitrile with portion adding and constant mixing, since The density of acetonitrile is 0.786 g / cm ³ . The solution formed after the complete dissolution of TChCC can be used for the degassing and disinfection of surfaces of the objects of weapons and military equipment by the irrigation method with a consumption rate of 0.5 l / m ² .

Thus, the experimental data presented in Tables 1 and 2 indicate that the proposed composition of the bifunctional formulation has degassing and disinfecting properties, and it can be used at positive and negative temperatures for degassing and disinfecting surfaces of weapons and military equipment objects infected with TX and BS.

Literature:

1. Guidance on special processing [Text]. - M .: Military publishing house of the Ministry of Defense of the Russian Federation, 2016 - 187 p.

2. OTT 7.2.311.1 [Text]. - Volsk-18: 33 Central Research Institute of the Ministry of Defense of the Russian Federation, 2009 - 148 p.

Claims (1)

Bifunctional recipe for decontamination and disinfection of weapons and military equipment (AME) based on the chloro-active preparation, characterized in that trichloroisocyanuric acid dissolved in acetonitrile is used as the chloro-active drug to apply the formulation both at positive and negative ambient temperatures , and in summer conditions in water together with soda ash in a mass ratio of 1: 1 and used in the form of 1-2 wt.% solution for degassing and 3-4 wt.% solution for disinfection.

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