RU2004156C1 - Insecticide remedy against cockroaches - Google Patents

Abstract

Usage: chemical insect control agents. SUMMARY OF THE INVENTION: An insecticidal agent for controlling cockroaches contains, as an active ingredient, a mixture of tetramethylthiourea f-ly (CH) NC (S) (CH) 74 to 80% by weight. sulfur - the rest is in the amount of about 10 wt.%, talc is the rest. 3 tab

Description

The invention relates to household insect control chemicals, in particular powdered cockroach control agents.

Boric acid and chlorophos cockroach control insecticides are known. Derivatives of boric acid act slowly, do not provide complete release of the object from insects. In addition, food products (syrup, egg, etc.) are included in the composition of insecticidal preparations, which presently constitute a known deficiency. A chlorophos-based preparation provides 75–100% death of insects on the fifth day. The effectiveness of chlorophos has recently decreased significantly due to the development of cockroaches of increased resistance to this drug.

A cockroach control agent, neopin, is known containing a mixture of neopin and talc. However, it is not effective enough.

The aim of the invention is the search for new insecticidal agents with high insecticidal activity.

The goal is achieved by the use of an agent comprising an active substance and a solid carrier. The active substance used is a mixture of tetramethylthiourea (TMTM) of the formula

sn, L-m-CH

wf

X

cn

3

and sulfur in the mass ratio: tetramethylurea - 74 - 80%, sulfur - the rest, in the amount of 5-10 wt.%. Talc (the rest) was used as a carrier. The form of use of the insecticidal agent is a powder prepared by mixing the active substance and the carrier in predetermined proportions.

The active substance is obtained by pyrolysis of tetramethylthiuram disulfide at 150 ° C, followed by blowing of volatile pro. products with water vapor at 120-130 ° С according to

CH CH scheme

 150 °

 IIII l. .

sn11

.zts &

/ "G Inc.: g m / SNg

  Nn-u

CH / CH-j,

The product contains 20% - 26% S (3).

0 5 0

5

0

5

0

5

0

5

Example. The insecticidal effect of the drug was tested using an olfactometer. As an olfactometer, two glass transparent hollow cylinders 12.5 cm long and 7.5 cm in diameter are used, separated by a diaphragm of filter paper with a slot for communication connected by a wide rubber band. Both ends of the cylinder are covered with filter paper, which is fixed to the cylinders with rubber rings, holes are made in the filter paper, which are first used to plant cockroaches, and then these holes are closed with drinking bowls (penicillin vesicles). In each cylinder, in addition to drinking bowls, there is food - a piece of bread. A bottle of 1 g of the preparation is placed in the cylinder. Take preparations containing 5.7 and 10% of the active substance on talc. The repetition of the experiments is threefold. Control - experience with talcum powder without an active substance.

After the test drug bottle is placed in the cylinder, 25 adult cockroaches are launched.

Observations are carried out in cycles of 3 days, i.e. the experiment with cockroaches is carried out for 3 days, then the experiment is made with other cockroaches, but with the same drugs (the drugs do not change). The experiment lasted 5 months without a break.

Ambient temperature 25 - 27 ° С, relative humidity 55 - 68%. The regime of alternating light and darkness is from 8.0 to 16.0 hours, with one day of complete darkness with a 3-day cycle of experience.

To create darkness, the entire system is placed in a paper cylinder of black paper with openable slots for observation. Observation lead in the twilight.

The results of the biological test of the product containing the ingredients at their boundary values are presented in Table 1.

The results of the biological test of the product containing the ingredients at their boundary values stored for 1 year prior to the test are shown in Table 2.

As the data in Table 1.2 show, the agent has a high insecticidal effect and retains 100% insecticidal activity for 1 year.

Table 3 presents the efficacy of the claimed agent and neopin.

According to the data in Table 3, the proposed cockroach control agent is 1.5-2 times superior to neopin in insecticidal activity at lower application rates per unit of the treated surface and longer residual effect on the treated surface. (56) 1. Means of controlling domestic insects. Repellents, raticides, disinfectants. M.: NIITEKHIM, 1977, p.2c - 24.

Guidelines for the use of Neopin and Neopinate dusts for pest control. M.: Ministry of Health of the USSR, 1980, p. 7.

Tetramethylthiourea, melt TU 6-14-12-204-85.

Table 1

table 2

Comparative characteristics of the effectiveness of insecticidal preparations, technical

tetramethylthiourea and neopine

Cockroach control, containing the active substance and the filler is talc, characterized in that, in order to enhance insecticidal activity, it contains a mixture of tetramethyl thiourea of the formula

Table 3

s

and sulfur in the following ratio of components, wt.%: Tetramethylthiourea of the specified formula 74 - 80 Sulfur The remaining amount of active principle in the medium is 5-10 wt.%, talc is the rest.