Title of Invention

METHOD FOR PRODUCING PESTICIDAL TABLET FOR ELECTRIC HEATING VAPORIZATION

Abstract

The present invention relates to A method for producing a pesticidal tablet for electric heating vaporization which comprises mixing a pyrethroid ~ompound, a coloring agent and an ester solvent at 0 to 80°C treating the mixture with diatomaceous earth and making the obtained pesticidal liquid kept on a fibrous carrier or porous carrier at a rate of 20 to 800mg of the pesticidal liquid per 2.2cm of the above-mentioned carrier, and the amount of the pyrethroid compound is 0.1-500mg per 2.2cm of the pesticidal tablet.

Full Text

Method for producing pesticidal tablet for electric heating vaporization Field of the Invention The present invention relates to a method for producing a pesticidal tablet for electric heating vaporization and a pesticidal tablet. Background Art Pesticidal tablets for electric heating vaporization include a coloring agent as a detector for active ingredient as well as a pyrethroid compound that is an active ingredient. While the pesticidal tablets are used by heating, the color gradually fades away, and the decrease of the active ingredient can be identified. Summary of the Invention The present invention provides a method for producing a pesticidal tablet for electric heating vaporization. The end point is generally evaluated by observing the change of the tablet color. The pesticidal tablet obtained by the present invention has even color and it is easy to evaluate the end point. Thus the present invention was made for providing a pesticidal tablet for electric heating vaporization in which the color has little unevenness. Namely, the present invention provides a method for producing a pesticidal tablet for electric heating vaporization which comprises mixing a pyrethroid compound, a coloring agent and an ester solvent, treating the mixture with diatomaceous earth and making the obtained pesticidal liquid kept on a fibrous carrier or porous carrier at a rate of 20 to 800mg of the pesticidal liquid per 2.2cm3 of the above-mentioned carrier, and a pesticidal tablet for electric heating vaporization which comprises keeping a pesticidal liquid on a fibrous carrier or porous carrier at a rate of 20 to 800mg of the pesticidal liquid per 2.2cm3 of the above-mentioned carrier, wherein the pesticidal liquid is obtainable by treating a premix including a pyrethroid compound, a coloring agent and an ester solvent with diatomaceous earth. Further, the present invention provides a pesticidal tablet for electric heating vaporization which comprises keeping a pesticidal liquid on a fibrous carrier or porous carrier at a rate of 20 to SOOmg of the pesticidal liquid per 2.2cm3 of the above-mentioned carrier, wherein the pesticidal liquid is obtainable by treating a premix including a pyrethroid compound, a coloring agent and an ester solvent with diatomaceous earth. Detailed Description of the Invention The pyrethroid compounds used for the present invention are, for example, pyrethroid compounds which can be vaporized at 140 to IBOT). Typical examples include 2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl 3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate, 5-propargyl-2-furufuryl 3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate, l-ethynyl-2-methyl-2-pentenyl 3-(2-methyl- l-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluorobenzyl3-(2,2-dichlorovinyl)-2,2- dimethylcyclopropanecarboxylate, l-ethynyl-2-methyl-2-pentenyl 3-(2-chloro-2-fluorovinyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro'4-methylbenzyl 3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methylbenzyl 3-(2-chloro-2-fluorovinyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methylbenzyl 3-(l-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methylbenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methoxybenzyl 3-(2,2-dichlorovinyl)-2,2- dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methoxybenzyl 3-methoxyiminomethyl-2,2-dimethylcyclopropanecarboxylate, -2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 3-(2-methyM-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2-methyl-4-oxo-3-(2-propynyl)cyclopent-2-enyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 3-(l-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2-methyl-3-allyl-4-oxo-2-cyclopenten-1-yl 3-(2-methyM-propenyl)-2,2,3,3-tetramethylcyclopropanecarboxylate and natural pyrethrins. In the view of vaporization and effects, 2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl 3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluorobenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6* tetrafluoro-4-methoxymethylbenzyl 3-(2-methyM-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 3-(l-propenyl)-2,2- dimethylcyclopropanecarboxylate and mixtures thereof are preferably used. Examples of the coloring agent include anthraquinone blue dyestuffs such as 1,4-dibutylaminoanthraquinone, 1,4-diisopropylaminoanthraquinone, 1,4-dioctylaminoanthraquinone, l-para-toluidino-4-hydroxyanthraquinone, 1,4-di-para-toluidinoanthraquinone, 1,5-di-para-toluidinoanthraquinone, 1,8-di-para-toluidinoanthraquinone, l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, l-methylamino-4-ortho-tolylaminoanthraquinone, l-methylamino-4-meta-tolylaminoanthraquinone and l-methylamino-4-para-tolylaminoanthraquinone; anthraquinone yellow dyestuffs such as l,8-bis(phenylthio)dodecahydroanthraquinone; azo yellow dyestuffs such as pyrazolone azo yellow dyestuffs (e.g. 3-methyl-l-phenyl-4-(phenylazo) pyrazol-5-ol) and methine yellow dyestuffs such as 4-[(l,5-dihydro-3- methyl-5-oxo-l-phenyl-4H-pyrazol-4'ylidene)methyl]-l,2-dihydro-5- methyl-2-phenyl-3H-pyrazol-3-one. These coloring agents may be used solely or mixed together in the present invention. The ester solvents are exemplified by alkyl alkanecarboxylates including C1-C10 alkyl esters of C12-C20 alkanemonocarboxylic acid (e.g. C1-C10 alkyl esters of lauric acid, C1-C10 alkyl esters of myristic acid, C1-C10 alkyl esters of palmitic acid and C1-C10 alkyl esters of stearic acid); dialkyl alkanedicarboxylates including di C4-C10 alkyl esters of C6-C12 alkanedicarboxylic acid (e.g. di C4-C10 alkyl esters of adipic acid, di C4-C10 alkyl esters of 1,9-nonanedicarboxylic acid, di C4-C10 alkyl esters of sebacic acid and di C4-C10 alkyl esters of 1,12-dodecanedicarboxylic acid); dialkoxyalkyl alkanedicarboxylates including di Cl*C4 alkoxy C1-C4 alkyl esters of C6-C12 alkanedicarboxylic acid (e.g. di C1-C4 alkoxy C1-C4 alkyl esters of adipic acid, di C1-C4 alkoxy C1-C4 alkyl esters of 1,9-nonanedicarboxylic acid, di C1-C4 alkoxy C1-C4 alkyl esters of sebacic acid and di Cl'C4 alkoxy C1-C4 alkyl esters of 1,12-dodecanedicarboxylic acid); dialkoxyalkoxyalkyl alkanedicarboxylates including di C1-C4 alkoxy C1-C4 alkoxy C1-C4 alkyl esters of C6-C12 alkanedicarboxylic acid (e.g. di C1-C4 alkoxy C1-C4 alkoxy C1-C4 alkyl esters of adipic acid, di C1-C4 alkoxy C1-C4 alkoxy Cl'C4 alkyl esters of 1,9-nonanedicarboxylic acid, di C1-C4 alkoxy C1-C4 alkoxy C1-C4 alkyl esters of sebacic acid, di C1-C4 alkoxy C1-C4 alkoxy C1-C4 alkyl esters of 1,12-dodecanedicarboxylic acid); trialkyl acyloxyalkanetricarboxylic acids including C1-C10 alkyl esters of C2-C4 acyloxyl,2,3-propanetricarboxylic acid; dialkyl alkenedicarboxylates including di C4-C10 alkyl esters of C4-C12 alkenedicarboxylic acid (e.g. di C4-C10 alkyl esters of maleic acid); alkyl benzoates including C8-C12 alkyl esters of benzoic acid; dialkyl benzenedicarboxylates including di C8-C12 alkyl esters of benzenedicarboxylic acid (e.g. di C8-C12 alkyl esters of phthalic acid and di C8-C12 alkyl esters of terephthalic acid); and trialkyl benzenetricarboxylates including tri C8-C12 alkyl esters of benzenetricarboxylic acid (e.g. tri C8-C12 alkyl esters of 1,2,4-benzenetricarboxylic acid. Typical examples of the alkyl alkanecarboxylates include isopropyl myristate and isopropyl palmitatei typical examples of the dialkyl alkanedicarboxylates include dioctyl adipate, diisononyl adipate, diisodecyl adipate, di 2-ethylhexyl adipate, dihexyl 1,9* nonanedicarboxylate, di 2-ethylhexyl 1,9-nonanedicarboxylate, dibutyl sebacate, dioctyl sebacate, di 2-ethylhexyl sebacate and di 2-ethylhexyl 1,12-dodecanedicarboxylate; typical examples of the dialkoxyalkoxyalkyl alkanedicarboxylates include dibutoxyethoxyethyl adipate; trialkyl acyloxyalkanetricarboxylates include tributyl 2-acetyloxy-l,2,3-propanetricarboxylate; typical examples of the dialkyl alkenedicarboxylates include di 2-ethylhexyl maleate; typical examples of the dialkyl benzenedicarboxylates include diisodecyl phthalate and di 2*ethylhexyl phthalate; and typical examples of the trialkyl benzenetricarboxylates include tri 2-ethylhexyl 1,2,4-benzenetricarboxylate. These ester solvents may be used solely or mixed together in the present invention. In the method for producing a pesticidal tablet for electric heating vaporization of the present invention, the first step comprises mixing a pyrethroid compound, a coloring agent, an ester solvent, and optionally an antioxidant, synergist, stabilizer, perfume, solvent other than the esters at 0 to 80oC in general to give premix. Examples of the antioxidant include phenol compounds such as dibutylhydroxytoluene, butylhydroxyanisole, 2,2-methylenebis(4-methyl- 6-tert-butylphenol) and 2,6-di-tert-butyl-4-methylphenol; examples of the synergist include bis(2,3,3,3-tetrachloropropyl) ether (S-421), N-(2-ethylhexyl)bicyclo[2.2.l]hept-5-ene-2,3-dicarboximide (MGK264) and a-[2-(2-butoxyethoxy)ethoxy]-4,5-methylenedioxy-2-propyltoluene (PBO); examples of the stabilizer include benzophenone ultraviolet absorbers such as 2-hydroxy-4-octyloxybenzophenone and benzotriazole ultraviolet absorbers such as 2-(2-hydroxy5-methylphenyl)benzotriazole, 2-[2-hydroxy-3-(3,4,5,6-tetrahydrophthalimidomethyl)-5-methylphenyl] benzotriazole, 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, 2-(2-hydroxy*5-tert-octylphenyl)benzotriazole and 2-(2-hydroxy-3,5-di-tert-pentylphenyl)benzotriazole; and examples of the solvent other than the esters include paraffin solvents such as kerosene, gas oil, IP Solvent 2028 (produced by Idemitsu Petrochemical Co., Ltd.), Isopar M (produced by ExxonMobil Yugen Kaisha) and Shelsol TM (produced by Shell Chemicals Japan Ltd.), which may be used if necessary. The mixing ratio of each component in the premix is usually 0.01*1 part by weight of the coloring agent, 1-100 parts by weight of the ester solvent, 0-20 parts by weight of the antioxidant, 0-50 parts by weight of the synergist, 0-20 parts by weight of the stabilizer, 0-10 parts by weight of the perfume, 0-50 parts by weight of the solvent other than the esters based on 1 part by weight of the pyrethroid compound. Next, the above premix is treated with diatomaceous earth to give a pesticidal liquid. The step treating the premix with diatomaceous earth can be, for example, performed by the following methods. (1) Method of mixing the above premix with diatomaceous earth, allowing it to stand and then separating the generated supernatant. (2) Method of mixing the above premix with diatomaceous earth, filtering it and obtaining the filtrate. (3) Method of filtering the above premix with a filter material pre-coated with diatomaceous earth and obtaining the filtrate. The method for treating the premix with diatomaceous earth includes any combination of these methods. Namely, the obtained liquid by an above-mentioned method may be subjected to another method mentioned above or repeated the treating method. Further, the present method may be mixing the premix with diatomaceous earth, and filtering with a filter material pre-coated with diatomaceous earth and obtaining the filtrate by combining the methods (2) and (3). Then, the pesticidal liquid obtained above are kept on a fibrous carrier or porous carrier at a rate of 20 to 800mg per 2.2cm3 of the carrier by impregnation or the like and further drying if needed to give the pesticidal tablet for electric heating vaporization of the present invention. In the above description, the volume of the carrier means apparent volume before keeping by impregnation or the like. Examples of the fibrous carrier used for the present invention include natural fibers such as pulp and cotton linter and synthetic fibers such as polyester and polyacrylate bound for producing a board. Examples of the porous carrier include pottery and ceramic board. The size of the fibrous carrier or porous carrier used for the present invention is usually in the rage of 2.0-2.5cm3 (e.g. approximately 2.2cmx 3.5cmx0.28cm) at the apparent volume before impregnation of the pesticidal liquid. In the pesticidal tablet for electric heating vaporization of the present invention, the contents of each component are usually at the ratio of 0.1-500mg of the pyrethroid compound, 0.1-lOmg of the coloring agent and l-600mg of the ester solvent per 2.2cm3 of the pesticidal tablet. The pesticidal tablet for electric heating vaporization of the present invention obtained above can be utilized by a conventional method for the pesticidal tablet. Namely, the pesticidal tablet ot tne present invention is heated at about 140-180oC on a hot plate set at a place where mosquitoes inhabit or its neighborhood to vaporize the pyrethroid compound as an active ingredient. At that time, the decrease of the active ingredient can be identified as the tablet color fades. Examples Hereinafter, the present invention is explained by examples in detail, but the present invention is not limited by the following examples. Example 1 Ten parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans'3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin), 5 parts by weight of dibutylhydroxytoluene, 0.4 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 7.5 parts by weight of diisononyl adipate, 25 parts by weight of isopropyl palmitate and 5 parts by weight of perfume were mixed and kerosene was added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre-coated with diatomaceous earth (commercial name^ Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (I20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention l). Example 2 The procedure of Example 1 was carried out except that 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)'cis,trans-3-(2*methyM-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin), 5 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 10 parts by weight of diisononyl adipate, 25 parts by weight of isopropyl palmitate, 5 parts by weight of perfume and kerosene were used to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 2). Example 3 Ten parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyM-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin), 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 10 parts by weight of diisononyl adipate, 10 parts by weight of tributyl 2-acetyloxy-l,2,3-propanecarboxylate, 25 parts by weight of isopropyl myristate and 5 parts by weight of perfume were mixed and kerosene was added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name-' Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre-coated with diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 3). Example '4 The procedure of Example 3 was carried out except that 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin), 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4'methylphenylamino)anthraquinone, 5 parts by weight of diisononyl adipate, 5 parts by weight of tributyl 2-acetyloxy-l,2,3-propanecarboxylate, 25 parts by weight of isopropyl myristate, 5 parts by weight of perfume and kerosene were used to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 4). Example 5 Ten parts by weight of (S)-2*methyl-3-propargyl*4-oxo-2'cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name^ prallethrin), 10 parts by weight of dibutylhydroxytoluene, 0.7 part by weight of 1,4-diisopropylaminoanthraquinone, 20 parts by weight of diisononyl adipate, 5 parts by weight of tributyl 2-acetyloxy-l,2,3-propanecarboxylate, 25 parts by weight of isopropyl myristate and 5 parts by weight of perfume were mixed and kerosene was added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre-coated with diatomaceous earth (commercial name'- Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 5). Example 6 Ten parts by weight of (S)-2'methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name'- prallethrin), 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 25 parts by weight of diisononyl adipate, 30 parts by weight of tributyl 2-acetyloxy-1,2,3-propanecarboxylate and 5 parts by weight of perfume were mixed and kerosene was added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre-coated with diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 6). Example 7 Ten parts by weight of (S)-2-methyl-3-pi'opargyl-4-oxo-2-cyclopenten-l-yi (lR)*cis,trans-3-(2-methyM-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name- prallethrin), 10 parts by weight of dibutylhydroxytoluene, 0.9 part by weight of 1,4-dibutylaminoanthraquinone, 20 parts by weight of diisononyl adipate, 15 parts by weight of tributyl 2-acetyloxy-l,2,3-propanecarboxylate and 5 parts by weight of perfume were mixed and kerosene was added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre'coated with diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 7). Example 8 Five parts by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(2-methyM-propenyl)-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4- diisopropylaminoanthraquinone, 40 parts by weight of diisononyl adipate and 44.5 parts by weight of IP Solvent 2028 (isoparaffin solvent produced by Idemitsu Petrochemical Co., Ltd.) were mixed to give a premix. Five parts by weight of diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre-coated with diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 8). Example 9 The procedure of Example 8 was carried out except that 5 parts by weight of 2,3,5,6*tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(2-methyl-l*propenyl)-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 60 parts by weight of diisononyl adipate and 24.5 parts by weight of IP Solvent 2028 (isoparaffin solvent produced by Idemitsu Petrochemical Co., Ltd.) were used to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 9). Example 10 Five parts by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4- diisopropylaminoanthraquinone and 84.5 parts by weight of diisononjd adipate were mixed to give a premix. Five parts by weight of diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre-coated with diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 10). Example 11 The procedure of Example 8 was carried out except that dioctyl sebacate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 11). Example 12 The procedure of Example 9 was carried out except that dioctyl sebacate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 12). Example 13 The procedure of Example 10 was carried out except that dioctyl sebacate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 13). Example 14 The procedure of Example 8 was carried out except that tributyl 2-acetyloxy-l,2,3-propanecarboxylate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 14). Example 15 Five parts by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(l-propenyl(Z/E=8/l))-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4* diisopropylaminoanthraquinone, 40 parts by weight of diisononyl adipate and 44.5 parts by weight of IP Solvent 2028 (isoparaffin solvent produced by Idemitsu Petrochemical Co., Ltd.) were mixed to give a premix. Five parts by weight of diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre-coated with diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 15). Example 16 The procedure of Example 15 was carried out except that 5 parts by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(l-propenyl(Z/E=8/l))-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4- diisopropylaminoanthraquinone, 60 parts by weight of diisononyl adipate and 24.5 parts by weight of IP Solvent 2028 (isoparaffm solvent produced by Idemitsu Petrochemical Co., Ltd.) were used to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 16). Example 17 Five parts by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3'(l-propenyl(Z/E=8/l))-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone and 84.5 parts by weight of diisononyl adipate were mixed to give a premix. Five parts by weight of diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) were added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate was further filtered with a filter material pre'coated with diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid were impregnated with a 2,2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 17). Example 18 The procedure of Example 17 was carried out except that tri 2-ethylhexyl 1,2,4-benzenetricarboxylate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 18). Example 19 The pi'ocedure of Example 17 was carried out except that di 2-ethylhexyl 1,12-dodecanedicarboxylate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 19). Example 20 The procedure of Example 17 was carried out except that di 2-ethylhexyl sebacate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 20). Example 21 The procedure of Example 17 was carried out except that tributyl 2-acetyloxyl,2,3-propanecarboxylate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 21). Example 22 The procedure of Example 17 was carried out except that di 2-ethylhexyl adipate was used in place of diisononyl adipate to give a pesticidal tablet for electric heating vaporization (hereinafter, referred to as the pesticidal tablet for electric heating vaporization of the present invention 22). Example 23 One part by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(l-propenyl(Z/E=8/l))-2,2-dimethylcyclopropanecarboxylate, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 83.2 parts by weight of diisononyl adipate and 5 parts by weight of perfume are mixed to give a premix. Five parts by weight of diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) are added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate is further filtei'ed with a filter material pre-coated with diatomaceous earth (commercial name* Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid are impregnated with a 2.2cmx3.5cmx 0,28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization. Example 24 One part by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(l-propenyl(Z/E=8/l))-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 53.2 parts by weight of diisononyl adipate and 30 partsby weight of α -[2-(2-butoxyethoxy)ethoxy]-4,5-methylenedioxy-2-propyltoluene (PBO) are mixed to give a premix. Five parts by weight of diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) are added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate is further filtered with a filter material pre-coated with diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid are impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization. Example 25 One part by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl (lR)-trans-3-(l-propenyl(Z/E=8/l))-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4-diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 33.2 parts by weight of diisononyl adipate, 5 parts by weight of perfume and 50 parts by weight of IP Solvent 2028 (isoparaffm solvent produced by Idemitsu Petrochemical Co., Ltd.) are mixed to give a premix. Five parts by weight of diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) are added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate is further filtered with a filter material pre-coated with diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid are impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization. Example 26 Ten parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin), 5 parts by weight of 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 3-(2-methyl-1 propenyl)-2,2-dimethylcyclopropanecarboxylate, 10 parts by weight of dibutylhydroxytoluene, 0.5 part by weight of 1,4- diisopropylaminoanthraquinone, 0.3 part by weight of l,4-bis(2,6-diethyl-4-methylphenylamino)anthraquinone, 5 parts by weight of diisononyl adipate, 5 parts by weight of tributyl 2-acetyloxy-l,2,3-propanecarboxylate, 25 parts by weight of isopropyl myristate and 5 parts by weight of perfume are mixed and kerosene is added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) are added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate is further filtered with a filter material pre-coated with diatomaceous earth (commercial name-Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid are impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a pesticidal tablet for electric heating vaporization. Example 27 The procedure of Example 26 is carried out except that 3 parts by weight are used in place of 5 parts by weight of 2,3,5,6-tetrafluoro •4-methoxymethylbenzyl 3-(2*methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate to give a pesticidal tablet for electric heating vaporization. Example 28 The procedure of Example 26 is carried out except that 2 parts by weight are used in place of 5 parts by weight of 2,3,5,6-tetrafluoro -4-methoxymethylbenzyl 3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate to give a pesticidal tablet for electric heating vaporization. Example 29 Ten parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name- prallethrin), 10 parts by weight of dibutylhydroxytoluene, 0.16 part by weight of 1,4- dibutylaminoanthraquinone, 0.8 part by weight of l,8-bis(phenylthio) dodecahydroanthraquinone, 5 parts by weight of diisononyl adipate, 5 parts by weight of tributyl 2-acetyloxyl,2,3-propanecarboxylate, 25 parts by weight of isopropyl myristate and 5 parts by weight of perfume are mixed and kerosene is added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) are added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate is further filtered with a filter material pre-coated with diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (l20mg) of the pesticidal liquid are impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a yellowish green pesticidal tablet for electric heating vaporization. Example 30 The procedure of Example 29 is carried out except that 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo- 2-cyclopenten-l-yl (lR)-cis,trans-3*(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) and 5 parts by weight of 2,3,5,6-tetrafluoro -4-methoxymethylbenzyl 3-(2-methyl-1propenyl)-2,2- dimethylcyclopropanecarboxylate are used in place of 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) to give a yellowish green pesticidal tablet for electric heating vaporization. Example 31 The procedure of Example 29 is carried out except that 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo- 2-cyclopenten-l-yl (lR)-cis,trans- 3-(2-methyl-l-propenyl)-2,2-dimethelcyclopropanecarboxylate (common name: prallethrin) and 3 parts by weight of 2,3,5,6-tetrafluoro -4-methoxymethylbenzyl 3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate are used in place of 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans'3' (2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) to give a yellowish green pesticidal tablet for electric heating vaporization. Example 32 The procedure of Example 29 is carried out except that 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo- 2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) and 2 parts by weight of 2,3,5,6-tetrafluoro -4-methoxymethylbenzyl 3-(2-methyl-1propenyl)-2,2- dimethylcyclopropanecarboxylate are used in place of 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) to give a yellowish green pesticidal tablet for electric heating vaporization. Example 33 Ten parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin), 10 parts by weight of dibutylhydroxytoluene, 0.08 part by weight of 1,4-dibutylaminoanthraquinone, 0,4 part by weight of 4-[(l,5-dihydro-3-methyl-5-oxo-l-pheny-4H-pyrazol-4-ylidene)methyl]-l,2-dihydro-5-methyl -2'phenyl'3H-pyrazol-3-one, 5 parts by weight of diisononyl adipate, 5 parts by weight of tributyl 2-acetyloxy-l,2,3-propanecarboxylate, 25 parts by weight of isopropyl myristate and 5 parts by weight of perfume are mixed and kerosene is added thereto to make the total 100 parts by weight to give a premix. Five parts by weight of diatomaceous earth (commercial name: Hyflosupercel, produced by Celite Corp.) are added to the premix, stirred for 5 minutes at room temperature and filtered to give a filtrate. The filtrate is further filtered with a filter material pre-coated with diatomaceous earth (commercial name- Hyflosupercel, produced by Celite Corp.) to give a pesticidal liquid. One hundred and twenty milligrams (I20mg) of the pesticidal liquid are impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give a yellowish green pesticidal tablet for electric heating vaporization. Example 34 The procedure of Example 33 is carried out except that 10 parts by weight of (S)-2-methyI-3-propargyl-4-oxo- 2-cyclopenten-l-yl (iR)-cis,trans-3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) and 5 parts by weight of 2,3,5,6-tetrafluoro -4-methoxymethylbenzyl 3-(2-methyl-1propenyl)-2,2- dimethylcyclopropanecarboxylate are used in place of 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) to give a yellowish green pesticidal tablet for electric heating vaporization. Example 35 The procedure of Example 33 is carried out except that 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo- 2-cyclopenten-l-yl (iR)-cis,trans-3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) and 3 parts by weight of 2,3,5,6-tetrafluoro -4-methoxymethylbenzyl 3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate are used in place of 10 parts by weight of (S)-2-methyl-3-propargyi-4-oxo-Z-cyclopenten--1-yl(1R)-Cis, trans-3-(2-methyl-1propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) to give a yellowish green pesticidal tablet for electric heating vaporization. Example 36 The procedure of Example 33 is carried out except that 10 parts by weight of (S)-2-methyl-3-propargyl-4-oxo- 2-cyclopenten'l-yl (lR)-cis,trans 3-(2-methyl-l-propenyl)-2,2-dimethylcyclopropanecarboxylate (common name: prallethrin) and 2 parts by weight of 2,3,5,6-tetrafluoro -4-methoxymethylbenzyl 3-(2-methyM'propenyl)-2,2- dimethylcyclopropanecarboxylate are used in place of 10 parts by weight of (S)-2-methyl-3'propargyl-4-oxo-2-cyclopenten-l-yl (lR)-cis,trans-3-(2-methyl-l-propenyl)-2,2'dimethylcyclopropanecarboxylate (common name: prallethrin) to give a yellowish green pesticidal tablet for electric heating vaporization. Test example Each of the pesticidal tablets for electric heating vaporization of the present invention 1-22 was put in an about 4cmx3cm bag laminated with aluminum, sealed the opening closely by heating and hold for 3 days at room temperature. After that, the sealing was opened and observed. Each of the pesticidal tablets for electric heating vaporization of the present invention 1-22 was uniformly blue. Reference example One hundred and twenty milligrams (l20mg) of each of the premix obtained by Examples 1-22 were impregnated with a 2.2cmx3.5cmx 0.28cm fibrous carrier (a fibrous board bound a mixture of cotton linter and pulp) by dropping the liquid onto the center of the carrier and drying to give each of pesticidal tablet for electric heating vaporization (hereinafter, referred to as the reference pesticidal tablet for electric heating vaporization 1-22). Each of the reference pesticidal tablets for electric heating vaporization 1-22 was put in an about 4cmx3cm bag laminated with aluminum, sealed the opening closely by heating and hold for 3 days at room temperature. After that, the sealing was opened and observed. All of the reference pesticidal tablets for electric heating vaporization 1-22 were brownish on the center and the color was uneven. According to the method for producing pesticidal tablet for electric heating vaporization of the present invention, a pesticidal tablet for electric heating vaporization in which the color has little unevenness can be obtained. We claim: 1. A method for producing a pesticidal tablet for electric heating vaporization which comprises mixing a pyrethroid compound, a coloring agent and an ester solvent, treating the mixture with diatomaceous earth and making the obtained pesticidal liquid kept on a fibrous carrier or porous carrier at a rate of 20 to SOOmg of the pesticidal liquid per 2.2cm3 of the above-mentioned carrier. 2. The method for producing a pesticidal tablet for electric heating vaporization according to claim 1, wherein the pyrethroid compound is selected from the group consisting of 2-methyl"3-propargyl-4-oxo-2-cyclopenten-l-yl 3K2-methyl-1-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluorobenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 3-(2-methyl-1-propenyl)-2,2-dimethylcyclopropanecarboxylate and 2,3,5,6-tetrafluoro-4-methoxymethylbenzyl 3-(l-propenyl)-2,2-dimethylcyclopropanecarboxylate. 3. The method for producing a pesticidal tablet for electric heating vaporization according to claim 1 or 2, wherein the coloring agent is a dyestuff selected from the group consisting of anthraquinone blue dyestuffs, anthraquinone yellow dyestuffs, azo yellow dyestuffs and methine yellow dyestuffs. 4. The method for producing a pesticidal tablet for electric heating vaporization according to any of claims 1 to 3, wherein the volume of the fibrous carrier or porous carrier is 2.0 to 2.5 cm3. 5. A pesticidal tablet for electric heating vaporization which comprises keeping a pesticidal liquid on a fibrous carrier or porous carrier at a rate of 20 to SOOmg of the pesticidal liquid per 2.2cm3 of the above-mentioned carrier, wherein the pesticidal liquid is obtainable by treating a premix including a pyrethroid compound, a coloring agent and an ester solvent with diatomaceous earth. 6. A method for producing a pesticidal tablet substantially as herein described and exemplified.

Documents:

975-che-2003-abstract.pdf

975-che-2003-claims dublicate.pdf

975-che-2003-claims original.pdf

975-che-2003-correspondnece-others.pdf

975-che-2003-correspondnece-po.pdf

975-che-2003-description(complete) dublicate.pdf

975-che-2003-description(complete) original.pdf

975-che-2003-form 1.pdf

975-che-2003-form 18.pdf

975-che-2003-form 26.pdf

975-che-2003-form 3.pdf

975-che-2003-form 5.pdf