RU2561059C1 - Composite indicator compound for integrated treatment of facilities after explosions - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: composite indicator compound is a water-alcohol solution of alkylbenzene sulphonate, a nonionic surfactant, an organic acid, an anticorrosion substance and a complexing agent and contains the following components in the given quantitative content, wt %: cocobenzyldimethylammonium chloride 27.2-33.4; alkyl dimethylamine - 1.0-1.1; alkylbenzene sulphonate - 6.1-8.3; glyoxal - 1.1-1.3; glycerine - 3.1-6.2; nonionic surfactant (OP-7) - 0.7-1.9; oxalic acid - 0.6-2.3; sodium tripolyphosphate - 0.7-1.3; dithizone - 0.05-0.09; water - up to 100%.

EFFECT: broader functional capabilities owing to simultaneous disinfection, decontamination of surfaces of objects and rapid detection of traces of tetranitrotoluene-based explosives on surfaces.

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Description

The invention relates to the field of combined compositions for the integrated conduct of decontamination, disinfection and rapid detection of traces of explosives based on tetranitrotoluene.

In the complex of anti-epidemic and sanitary-hygienic measures carried out in infectious foci, an important element is the disinfection of surfaces of objects.

Due to the complex nature of possible infection, it is important to develop a combined indicator composition for the simultaneous decontamination and disinfection of the surfaces of infected objects.

In the case of the possible commission of acts of sabotage with the use of explosives, the detection of traces of explosives in the foci of destruction is also relevant.

Known aerosol decontaminating agent containing monohydric alcohol, propellant, alkylbenzenesulfonate, nonionic surfactant, organic acid, complexing agent and water in the following ratio of components, wt.% (Patent for the invention No. 2290208 from 11.16.2004):

alkylbenzenesulfonate or sulfonol - 0.5-5;

polyphosphate (sodium hexametaphosphate) - 0.3-0.5;

monohydric alcohol - 2.0-5.0;

nonionic surfactant (OP-7 or OP-10) - 0.1-1.5;

organic acid - 0.5-2.0;

anticorrosive substance (sodium hexametaphosphate) - 0.5-1.0;

complexing agent (dithizone) - 0.02-0.04;

water - 90.0-95.0;

propellant (dichlorodifluoromethane) - 8.0-85.0.

However, this tool is suitable only for decontamination.

Known application for disinfection of surfaces of objects of formulations based on Quaternary ammonium compounds (hereinafter referred to as HOUR). Thus, the well-known disinfectant VTS 50 RU manufactured by STEPAN EUROPE France (Stepan Europe, France) (benzalkonium chloride) is an aqueous solution of the main substance - alkyldimethylbenzylammonium chloride - 51% and impurities alkyl (C ₁₂ -C ₁₆ ) dimethylamine - not more than 1%. Using this recipe, you can only disinfect the surfaces of objects.

The disadvantage of the above existing compounds is their monofunctionality, that is, the use only for decontamination (first composition) or disinfection (second composition) of the surfaces of objects.

It is known to use a quaternary ammonium compound such as didecyl methylammonium halide clathrate with carbamide as an active agent providing a complex action, in particular for degassing, disinfection, disinsection, decontamination and shielding, while the composition based on this active substance is used in the form of a foam (patent for invention No. 2290208 of November 16, 2004).

The disadvantage of this composition is the need for subsequent application to the foam layer of another composition effective to inactivate the active substance, and / or application of an antifoam on the foam layer to destroy it.

Previously, the ability of compounds belonging to the HOUR class to be used to detect explosives based on polynitroaromatic compounds was established.

Thus, a formulation containing an alcoholic solution of tetrabutylammonium chloride allows for the rapid detection of these substances on the surfaces of various objects (patent for invention No. 2290208 of November 16, 2004).

The technical result achieved by the present invention is to expand operational capabilities due to the simultaneous disinfection, decontamination of the surfaces of objects and rapid detection on the surfaces of traces of explosives based on tetranitrotoluene.

This technical result is achieved by the fact that we propose a combined indicator composition for complex processing of premises due to explosions, which is a water-alcohol solution of alkylbenzenesulfonate, a nonionic surfactant, an organic acid, an anticorrosive substance and a complexing agent, while ensuring the disinfection, decontamination of the surfaces of objects and rapid detection on the surfaces of traces of explosives based on tetranitrotoluene, and The following components are at their quantitative ratio, wt.%:

cocobenzyl dimethyl ammonium chloride - 27.2-33.4;

alkyldimethylamine 1.0-1.1;

alkylbenzenesulfonate - 6.1-8.3;

glyoxal - 1.1-1.3;

glycerol - 3.1-6.2;

nonionic surfactant (OP-7) - 0.7-1.9;

oxalic acid - 0.6-2.3;

sodium tripolyphosphate - 0.7-1.3;

dithizone - 0.05-0.09;

water - up to 100%.

Combined indicator composition for complex processing of premises due to explosions, which is a water-alcohol solution of alkylbenzenesulfonate, nonionic surfactant, organic acid, anticorrosive substance and complexing agent, in which for the simultaneous disinfection, decontamination of surfaces of objects and rapid detection on the surfaces of traces of explosives substances based on tetranitrotoluene the following components are used in the ratio, wt.%:

cocobenzyl dimethyl ammonium chloride - 27.2-33.4;

alkyldimethylamine 1.0-1.1;

alkylbenzenesulfonate - 6.1-8.3;

glyoxal - 1.1-1.3;

glycerol - 3.1-6.2;

nonionic surfactant (OP-7) - 0.7-1.9;

oxalic acid - 0.6-2.3;

sodium tripolyphosphate - 0.7-1.3;

dithizone - 0.05-0.09;

water - up to 100%.

In the case of surface treatment with this combined indicator composition, it is deactivated and disinfected.

In addition, in the presence of traces of tetranitrotoluene-based explosives on the surface, characteristic brown spots appear on the surface for several hours.

This combined indicator composition is used in a special aerosol device. The aerosol device is a spray can of various volumes, equipped with a spray and filled with a combined formulation. Formulation is sprayed using compressed air pressure generated by a spray pump.

The detection of polynitroaromatic compounds based on tetranitrotoluene is based on the reaction occurring during the interaction of a substance belonging to the class of quaternary ammonium compounds with a solution of tetranitrotoluene, leading to the appearance of a characteristic brown stain, and the staining that appears remains for a long time (more than 5 days).

The advantages of using this combined indicator composition in an aerosol device over known compositions are as follows:

no need for direct contact of the operator with the analyzed surface;

the multiple use of one package (at least 100 times), which allows you to repeatedly process the surface of the object;

maintaining operability in the temperature range from 0 ° С to plus 50 ° С;

provides a large area of processing and control;

the formulation used is not toxic;

Freon with its ozone-depleting potential is not used;

the aerosol device is made of polymeric materials and is corrosion-resistant and shockproof;

In the case of detection of tetranitrotoluene compounds, sampling with subsequent processing and analysis in a specialized laboratory is not required;

convenience and safety in use;

preservation of properties in the presence of possible impurities (oil, fuel, etc.);

allows for processing and rapid detection on vertical, inclined and horizontal surfaces;

the formulation is prepared on the basis of alcohol solutions and is non-toxic, in case of contact with exposed skin, it is enough to wash it off with soap and water;

provides a contrasting and time-stable indicative effect upon detection of tetranitrotoluene compounds, which lasts a long time.

Conducted experimental storage showed the stability of the formulation when stored in an aerosol device and the preservation of its performance for at least 2 years.

Experimental studies have shown that the best effect is achieved when using a composition consisting of (wt.%):

cocobenzyl dimethyl ammonium chloride - 33.4;

alkyldimethylamine - 1.1;

alkylbenzenesulfonate 8.3;

glyoxal - 1.3;

glycerol - 6.2;

nonionic surfactant (OP-7) - 0.7-1.9;

oxalic acid - 2.3;

sodium tripolyphosphate - 1.3;

dithizone - 0.09;

water - up to 100%.

With a lower content of cocobenzyl dimethylammonium chloride (27.2%) and alkylbenzenesulfonate (6.1%), the required quality of disinfection, deactivation and visualization of the obtained indication effect is not ensured, and the use of their higher concentrations is impractical (respectively, 33.4% and 8.3 %) due to a further slight increase in the disinfecting effect, an increase in the destructive effect on the processed products and adverse effects on human health.

To carry out disinfection, decontamination and detection of traces of explosives directly on the surface of objects using an aerosol device, the following operations are carried out:

remove the cap from the spray pump, bring the aerosol device at a distance of 10-20 cm from the surface to be monitored, taking into account the direction of the wind;

repeatedly pressing the button or handle of the spray pump, spray the indicator solution on the surface to be examined;

in the presence of traces of tetranitrotoluene, observe the appearance of an indication effect on the controlled surface. The appearance of a brown color in accordance with the standard indicates the presence on the surface of explosives based on tetranitrotoluene compounds. The indication effect persists for a long time (several days).

In cases where the indication effect is not obvious, and also when the surface color matches the color of the indication effect, a cotton-gauze disk or a strip of filter paper was wetted with the indicator formulation, they wiped the analyzed surface with an area of about 100 cm ² and the appearance of the indication effect on the surface of the filter paper was observed. It is possible to apply the formulation directly to the surface to be examined, followed by wiping it with a cotton-gauze disk.

In order to detect tetranitrotoluene under the conditions of the experiment, stainless steel, aluminum, and tiles were painted and painted with XB-518 paint with an area of 100 cm ² by irrigation using a 1% alcohol solution of tetranitrotoluene. The application of tetranitrotoluene solution on the surface was carried out by spraying it using an aerosol device. The dispersion of the aerosol formulation was 100-200 μm. After applying the solution, the surfaces were maintained at the test temperature (0 ° C, plus 20 ° C and plus 50 ° C) for at least 0.5 hours.

After 0.5 h, 1 h and 2 h after application of tetranitrotoluene solution to the plates, cotton-gauze disks or strips of filter paper from an aerosol device were wetted with a combined formulation. Then, sampling was carried out by rubbing them over the entire treated surface without violating its integrity for 1 min.

On other plates with a solution of tetranitrotoluene, as well as on cotton-gauze discs and strips of filter paper obtained after surface treatment, from a distance of 10-20 cm, the proposed combined formulation was applied from an aerosol device with a flow rate of 0.3-1.0 l / m ² .

The appearance of a characteristic indicator effect on cotton gauze disks and filter strips was observed.

In the case of spraying the combined formulation from the aerosol device directly onto the analyzed surface, the appearance of an indication effect on this surface was observed. The time of occurrence of the indicator effect was recorded. The test results are shown in the table.

The results of the tests showed that the combined indicator composition for complex processing of premises due to explosions in the aerosol device without the use of additional devices and reagents maintains its operability and provides detection of traces of tetranitrotoluene compounds on various surfaces in the temperature range from 0 ° C to + 50 ° C after 2 h after surface treatment with a solution of tetranitrotoluene. Along with the quaternary ammonium compound (BTC 50 RU), a composition based on biguanidines and amines (catamine, catamine AB) was also tested as a combined formulation. In all cases, a positive result of detecting traces of tetranitrotoluene was obtained.

Table.
The time of the appearance of the indicator effect when applying the combined composition to the examined surface treated with 1%
tetranitrotoluene solution Temperature ° С The time of the appearance of the indication effect on the surface after its processing with a combined formulation, s Stainless steel Aluminum Tile Metallic. surface., painted. paint XB 518. 0.5 hours after application of the tetranitrotoluene solution 0 ° C 50-60 50-60 50-60 50-60 Plus 20 ° C 30-40 30-40 30-40 30-40 Plus 50 ° C 25-30 25-30 25-30 25-30 1.0 hour after application of the tetranitrotoluene solution 0 ° C 50-60 50-60 50-60 50-60 Plus 20 ° C 30-40 30-40 30-40 30-40 Plus 50 ° C 25-30 25-30 25-30 25-30 2.0 hours after application of the tetranitrotoluene solution 0 ° C 60-70 60-70 60-70 60-70 Plus 20 ° C 50-60 50-60 50-60 50-60 Plus 50 ° C 30-40 30-40 30-40 30-40

The time of occurrence of the indicator effect when applying the combined composition to the test surface treated with 1% tetranitrotoluene solution is 25-70 seconds, depending on the surface temperature.

Thus, the proposed combined indicator composition for complex processing of premises due to explosions provides rapid detection of compounds on the surfaces of objects in a wide range of operating temperatures.

The results of evaluating the bactericidal ability of the combined formulation for the inactivation of microorganisms confirmed the presence of disinfectant properties at an exposure time of 30-120 minutes.

Checking the deactivating properties of the combined formulation confirmed her ability to reduce the power of the exposure dose of gamma radiation.

The aerosol device (hereinafter AC) has a low cost, optimal weight and size characteristics, provides a low specific consumption of indicator formulation, when spraying, the required dispersion and uniformity of the spray torch are achieved. Each aerosol device is labeled by offset printing on self-adhesive white semi-gloss paper that is resistant to aggressive media.

Label contains:

Conditional and full name of the product;

the volume of the combined formulation;

information about the purpose of the AU and the method of its use;

indication effect upon detection of tetranitrotoluene compounds;

production date;

shelf life.

Aerosol devices can be supplied as a kit. Such a kit is designed for decontamination, disinfection and rapid detection of tetranitrotoluene compounds on horizontal, inclined and vertical surfaces. The kit is shown below.

Aerosol device pcs., Including 2 spray pump one case, pcs. one combined recipe from 0.15 to 1.5 l - label, pcs. one Set of accessories, pcs., one

including:

spray pump one cotton-gauze disk with a diameter of 60 mm, pcs. one hundred operational documentation, set one cardboard packaging, pcs. one

The main characteristics of the kit for decontamination, disinfection and rapid detection of tetranitrotoluene compounds are determined:

preparation time for work, no more, min one the detection time of tetranitrotoluene compounds, no more than min four time to save the indicator effect, at least hours one threshold sensitivity, mg / ml 5 · 10 ^- 1 operating temperature range, ° С 0 - plus 50 AC weight, kg from 0.15 to 1.5 size of detected drops, not less than, microns 150 frequency of use, not less than, times fifty warranty period of storage, not less than, years 2

Scopes of a set:

decontamination, disinfection and rapid detection of traces of tetranitrotoluene compounds by aerosol irrigation of the surfaces of objects;

detection of spills (spills), contamination and surface cleanliness of containers used for the transport of tetranitrotoluene-based explosives;

quality control of washing surfaces of objects from traces of tetranitrotoluene compounds.

The proposed technical solution is industrially applicable, since standard equipment and widespread materials and chemical reagents can be used for its implementation.

Claims (1)

Combined indicator composition for complex processing of premises due to explosions, which is a water-alcohol solution of alkylbenzenesulfonate, nonionic surfactant, organic acid, anticorrosive substance and complexing agent, characterized in that for simultaneous disinfection, decontamination of surfaces of objects and rapid detection on surfaces of traces of explosives based on tetranitrotoluene the following components are used in their quantitative ratio, wt.%:
cocobenzyl dimethyl ammonium chloride 27.2-33.4 alkyldimethylamine 1.0-1.1 alkylbenzenesulfonate 6.1-8.3 glyoxal 1.1-1.3 glycerol 3.1-6.2 nonionic surfactant (OP-7) 0.7-1.9 oxalic acid 0.6-2.3 sodium tripolyphosphate 0.7-1.3 dithizon 0.05-0.09 water up to 100%