JP2551775B2 - Agrochemical solid formulation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a solid pesticide solid formulation containing a pesticide active ingredient which is solid at room temperature and has a melting point of 70 ° C. or lower, and the formulation particles are stably maintained without change in size. Regarding

[Prior Art] Conventional pesticide solid preparations include, for example, powders, coarse powders, wettable powders, water solvents, granules, fine granules, and fine granules F.
However, in order for these solid preparations to exert their desired effects as pesticides, it is necessary that the size of the particles of each preparation be maintained at the size specified for each preparation. is there.

However, when the active ingredient in the formulation has a melting point (70 ° C or lower) lower than the drying temperature during production or the storage temperature after formulation and is solid at room temperature, these pesticide solid formulations such as powders, coarse powders and water are used. Crystals of the active ingredient may precipitate over time in a disinfectant, water solvent, etc., and may adhere to each other and agglomerate to form coarse particles, resulting in lack of uniformity of the active ingredient. In addition, the active ingredient is deposited on the surface of the particles, and the particles adhere to each other, aggregate and solidify (this phenomenon is called caking, blocking, solidification, etc., but the term "solidification" is used in this specification). Sometimes.

It is considered that such a change with time of the active ingredient is caused by a change in the state of the active ingredient from solid-liquid-solid due to a change in environmental temperature. That is, even if the active ingredient to be charged at the time of production is initially solid, depending on its property, it melts during the drying step, or in the manufacturing method that does not involve the drying step, it melts due to the temperature rise during storage. The melted active ingredient exudes on the surface of the particles and fuses with the active ingredient exuded on other particles. After that, when the environmental temperature is lowered and becomes lower than the melting point of the active ingredient, it is considered that the fused active ingredient is crystallized and adheres and aggregates to cause formation of coarse particles or solidification.

Adhesion of such an active ingredient in a pesticide solid preparation, formation of coarse particles due to aggregation, or adhesion of particles to each other and formation of solidification due to aggregation, that is, change over time in the formulation particles impairs uniformity of the active ingredient. This may cause an extreme bias in the concentration of the active ingredient and classification at the time of spraying, which may cause a partial lack of efficacy or, on the contrary, cause phytotoxicity. In particular, granules are characterized by being more fluid than powders and wettable powders and being easy to handle during packaging and use, but solidification means eliminating this feature, which is fatal for granules. It is a phenomenon. This is difficult to find and predict since it is easy to occur during packaging, transportation and storage of granules, and granules once solidified are not flowable, depending on their degree. The handling of time becomes very troublesome, and the economic and labor loss caused is great.

Therefore, it is generally necessary to prevent the active ingredient from changing with time in solid agricultural chemical formulations, and conventional ketones (Japanese Patent Publication No. Sho 41-7716,
JP 42-9725, JP 44-308), alcohols (JP 44-308, JP 46-31356, JP 53-88324), phenols (JP 44-1307), fatty acids or salts thereof. (JP-A-50-155632, JP-B-55-18681), acidic phosphoric acid ester or its salt (JP-B-58-13209), lactone (JP-A-59).
-216801), alkylene glycol or ether thereof (Japanese Patent Publication No. 60-5561) and the like are known. However, use of phosphoric acid triesters, aromatic carboxylic acid esters or aliphatic carboxylic acid esters having 10 or more carbon atoms as such an inhibitor, whose chemical structure and physical properties are clearly different from those of conventional inhibitors Has not been reported so far.

[Problems to be Solved by the Invention] A conventionally known inhibitor for preventing the change over time of the active ingredient of a solid agricultural chemical formulation is, for example, highly toxic, expensive, insufficient in the protective effect, It has drawbacks such as limitations, and it is not satisfactory especially when the active ingredient is an agricultural chemical ingredient which is a solid at room temperature and has a melting point of 70 ° C or lower. Therefore, it is necessary to find an inhibitor which is sufficiently satisfactory for preventing the change over time of the active ingredient in an agricultural chemical solid preparation containing an agricultural chemical ingredient having a melting point of 70 ° C. or less and being solid at room temperature, in addition to conventionally known inhibitors.

[Means for Solving Problems] As a result of various studies on the method for preventing changes over time of a solid agricultural chemical formulation containing a solid agricultural chemical component having a melting point of 70 ° C. or lower, the present inventors Agricultural chemicals obtained by dissolving a solid pesticide active ingredient at room temperature in one or more high-boiling point solvents selected from aromatic carboxylic acid esters and aliphatic carboxylic acid esters having 10 or more carbon atoms on a solid carrier. Unexpectedly, there is no change in the active ingredient over time (such as formation of coarse particles or caking), the toxicity is extremely low, the solid preparation can be manufactured at low cost, and it is sufficiently satisfactory as an agricultural chemical. The active ingredient is 3-phenoxybenzyl 2- (4-ethoxyphenyl) -2-methylpropyl ether [hereinafter referred to as "ethofenprox"].
It was found that the effect of preventing the change of the active ingredient over time in the solid pesticide solid preparation is is more excellent, and the present invention was completed based on these.

That is, the present invention provides (1) a melting point obtained by dissolving (i) an aromatic carboxylic acid ester, (ii) an aliphatic carboxylic acid ester having 10 or more carbon atoms in one or more high boiling point solvents.
A solid pesticide formulation that prevents solidification at room temperature at 70 ° C or below by supporting it on a solid carrier. (2) Etofenprox is a pesticide component that is solid at room temperature below 70 ° C. Dissolved in one or more high boiling point solvents selected from (3) (i) aromatic carboxylic acid ester, (ii) aliphatic carboxylic acid ester having 10 or more carbon atoms, and Melting point
The present invention relates to a method for preventing a pesticide component which is solid at room temperature at 70 ° C. or lower from being supported on a solid carrier, so as to prevent the pesticide component from changing with time.

The agrochemical component used in the present invention has a melting point of 70 ° C or lower, preferably 10 to 60 ° C, more preferably 20 to 50 ° C, and is a solid agricultural chemical at room temperature (-5 ° C to 35 ° C). Examples of such pesticide components include insecticides (eg pyrethroid insecticides, carbamate insecticides, organophosphorus insecticides,
Natural insecticides, etc., bactericides (for example, organochlorine fungicides, organophosphorus fungicides, benzimidazole fungicides,
Organic sulfur fungicides, phenolic fungicides, carbamate fungicides, herbicides (eg organophosphorus herbicides, organochlorine herbicides, carbamate herbicides, acid amide herbicides, dinitroaniline herbicides) Etc.), plant growth regulators, repellents and the like having a melting point of 70 ° C. or lower and solid at room temperature, or a mixture of two or more thereof. Typical specific examples of such agrochemical components used in the present invention are shown below [the generic name or trade name is shown in parentheses after the compound name].

(Insecticides) Pyrethroid insecticides: 5-benzyl-3-furylmethyl (1RS) cis, trans-chrysanthemate (resmethrin), 5-benzyl-3-furylmethyl (1R) trans-chrysanthemate (bioresmethrin) , 3-phenoxybenzyl (1RS) cis, trans-3
-(2,2-Dichlorovinyl) -2,2-dimethyl-cyclopropanecarboxylate (permethrin), α-cyano-3-phenoxybenzyl-2- (4-chlorophenyl) 3-methylbutyrate (fenvalerate) carbamate Insecticide: 0-secondary-butylphenylmethylcarbamate (BPMC, Bassa), 2-ethylthiomethylphenyl methylcarbamate Organophosphorus insecticide: 0-3,5,6-trichloro-2-pyridyl 0,0-diethyl Phosphorothioate, 0- (4-cyanophenyl) 0,0-dimethylphosphorothioate (CYAP), 0,0-dimethyl S-methylcarbamoylmethyl phosphorodithioate (dimethoate), 0-ethyl 0-para-nitrophenyl phenylphosphonothio ATE (EPN), S-α-ethoxycarbonylbenzyl 0,0-dime Tyl phosphorodithioate (PAP), 0,0-diethyl 0- (2,3-dihydro-3-oxo-
2-Phenyl-6-pyridazinyl) phosphorothioate (pyridafenthione), S-2,3-dihydro-5-methoxy-2-oxo-1,
3,4-thiadiazol-3-ylmethyl 0,0-dimethyl phosphorodithioate (DMTP), S-6-chloro-2,3-dihydro-2-oxobenzoxazol-3-ylmethyl, 0,0-diethyl Phosphorodithioate (phosalone), S- (N-formyl-N-methylcarbamoylmethyl) 0,0-dimethyl phosphorodithioate (formothione), 2-methoxy-benzo-4H-1,3,2-dioxa Phosphorin-2-sulfide (salithione), 0,0-dimethyl S-2- (1-methylcarbamoylethylthio) ethyl phosphorothioate (bamidothione) (bactericide) Organochlorine fungicide: N-propyl-N- [2 -(2,4,6-Trichlorophenoxy) ethyl] -imidazole-1-carboxamide Organophosphorus fungicide: S-benzyl 0,0-diisopropyl phosphorothioe (IBP) Organic sulfur fungicides: diisopropyl 1,3-dithiolane-2-ylidene malonate (isoprothiolane), Sn-butyl S'-P-tert-butylbenzyl N-3-pyridyldithiocarbonimidate (butiobate) ) Carbamate fungicide: propyl 3- (dimethylamino) propyl carbamate (propamocarb) (herbicide) Organic phosphorus herbicide: 0-ethyl 0- (4-methyl-2-nitrophenyl) -N-isopropyl phosphoroamide thioate ( Amiprophos), 0,0-diisopropyl S-2-benzenesulfonamide ethyl phosphorodithioate, 0-methyl 0- (4-methyl-2-nitrophenyl) -N-isopropyl phosphoroamidothioate (amiprophosmethyl ) Organochlorine herbicides: S-ethi 4-chloro-2-methyl-phenoxy (thioacetate) (MCPA-thioethyl) dinitroaniline herbicide: α, α, α-trifluoro-2,6-dinitro-N, N-dipropyl-p-toluidine (trifluralin ) Acid amide herbicide: 2-chloro-2 ', 6'-diethyl-N-methoxymethylacetanilide (arachlor, lasso) Particularly preferred among these agrochemical components are, for example, etofenprox, 0-secondary- Butylphenyl methyl carbamate (BPMC, bassa), diisopropyl 1,3-dithiolane-2-ylidene
Malonate (isoprothiolane), S-benzyl 0,0-diisopropyl phosphorothioate (IBP), α, α, α-trifluoro-2,6-dinitro-N, N-dipropyl-p-toluidine (trifluralin), or mixtures thereof. Among them are a mixture of etofenprox and isoprothiolane, a mixture of etofenprox and IBP, and a mixture of bassa and IBP.

Further, the high boiling point solvent used in the present invention has a boiling point of 150.
℃ or more, preferably 200 ℃ or more, more preferably 250 ℃ or more, at room temperature (-5 ℃ ~ 35 ℃) 1 pesticide component
% Or more and is a mixture of one or more selected from aromatic carboxylic acid esters and aliphatic carboxylic acid esters having 10 or more carbon atoms.

As an aromatic carboxylic acid ester, a molecular weight of 100 to 800
Preferably used is 120 to 500, specifically, C _1-6 alkyl benzoate such as methyl benzoate, ethyl benzoate, propyl benzoate, butyl benzoate, etc., dimethyl phthalate, diethyl phthalate, phthalate. A di-C _1-12 alkyl phthalate such as dipropyl acid, dibutyl phthalate, and diisodecyl phthalate is used.
As the aliphatic carboxylic acid ester having 10 or more carbon atoms, those having a molecular weight of 170 to 500, preferably 170 to 300 are used, and specifically, acetic acid C _8-12 alkyl ester such as 2-ethylhexyl acetate, dipropyl succinate, Di-C _3-6 alkyl ester such as dibutyl succinate, dibutyl adipate such as dibutyl adipate and diamyl adipate
_2-6 alkyl ester or the like is used.

In addition, the solid carrier used in the present invention is generally used as a diluent or bulking agent in the production of a solid agricultural chemical formulation, and is not particularly limited as long as the object of the present invention is achieved. . Such solid carriers include, for example, vegetable powder (for example, rice bran, soybean flour, tobacco flour, wheat flour, wood flour, etc.), mineral powder (for example,
Kaolin, bentonite, calcium phosphate, clays such as acid clay, talc such as talc powder, wax stone powder, silica such as diatomaceous earth, mica powder), alumina,
Sulfur powder, activated carbon and the like are also used, and these may be used alone or in admixture of two or more (5 to 90% by weight, preferably 10 to 80% by weight in the formulation).

The agricultural chemical solid preparation of the present invention has a melting point of 70 ° C. or lower dissolved in one or more high boiling solvents selected from (i) aromatic carboxylic acid ester and (ii) aliphatic carboxylic acid ester having 10 or more carbon atoms. A pesticide component that is solid at room temperature is supported on a solid carrier for production.

The pesticide solid preparation of the present invention can be produced according to a general method for producing a pesticide solid preparation. For example, first in a high boiling point solvent, 1 to 85% by weight, preferably 5 to
50% by weight of agrochemical components may be dissolved. When dissolved, it can be heated (40 to 60 ° C) if necessary. Next, the pesticide component dissolved in a high-boiling solvent is supported on a solid carrier according to a conventional method, and further, for example, a penetrant, a wetting agent, a mucilage agent, a stabilizer, etc. are appropriately added, and then, for example, a dusting agent according to a conventional method. Alternatively, it may be manufactured into a solid preparation such as a coarse powder, a wettable powder, a water solvent, granules, fine granules and tablets. Therefore, when the solid pesticide formulation of the present invention is produced, for example, soaps generally used in the production of the solid pesticide formulation, if necessary,
Sulfate ester of higher alcohol, alkyl sulfonic acid,
Alkylaryl sulfonic acid, quaternary ammonium salt,
Surfactants such as oxyalkylamines, fatty acid esters, polyalkylene oxides, and anhydrosorbitols can be generally contained in the preparation in an amount of about 0.2 to 10%. Furthermore, if necessary, casein, gelatin, starch, alginic acid, agar, CMC, polyvinyl alcohol, bentonite, cresol soap, etc. may be appropriately used. In addition, if necessary, a bactericide that has a melting point of more than 70 ° C or is liquid at room temperature (-5 to 35 ° C) (for example, an organic chlorine-based bactericide, an organic phosphorus-based bactericide, a benzimidazole-based bactericide, a copper-based bactericide, Organic sulfur fungicides, phenolic fungicides, antibiotics, etc., insecticides (natural insecticides, carbamate insecticides, organophosphorus insecticides, etc.), acaricides,
Nematicides, herbicides, plant growth regulators, stabilizers, synergists,
Attracting agents, repellents, fragrances, plant nutrients, fertilizers, various amino acids, low molecular weight or high molecular weight phosphates, etc. are appropriately used, for example, when agrochemical components are dissolved in a high boiling point solvent or after being dissolved into a solid preparation. Etc. may be mixed.

The pesticide solid preparation of the present invention thus obtained can be produced from an inexpensive raw material, has very little toxicity and is safe, and the pesticide component does not change over time even when stored for a long period under ordinary storage conditions. It is a pesticide. Then, the solid pesticide preparation of the present invention can be used in the same manner as a conventional solid preparation containing the same pesticide component, and as a result, it can exhibit excellent effects as compared with conventional products. For example, when an insecticide is contained as a pesticide component, the pesticide solid formulation of the present invention is used for target pests by, for example, seedling box treatment, crop foliage application, insect body application, underwater application in paddy fields, or soil treatment. can do. Further, when containing a fungicide as a pesticide component, the solid pesticide formulation of the present invention,
For example, it can be used safely and effectively in crops by spraying, dusting, irrigating or seed dressing. Then, the pesticide solid preparation of the present invention is treated with an insecticide or (and)
When used as a bactericide, its application amount can be varied over a wide range depending on the application time, application site, application method, etc., but generally 10 g to 300 g of active ingredient per hectare.
It is desirable to apply it so as to be 0 g, preferably 50 g to 1000 g. If the solid pesticide formulation is a wettable powder,
It may be used by diluting it so that the final concentration of the active ingredient having an insecticidal or / and bactericidal action is in the range of 10 to 1000 ppm. Furthermore, when the solid agricultural chemical formulation of the present invention is used as a herbicide according to a conventional method, the amount used is about 1 to 50 g, more preferably about 2 to 40 g per 1 are of paddy field, and about 1 per 1 are of upland field. ~ 50g, more preferably about 2
~ 40g.

And the agricultural chemical solid preparation of the present invention is used according to the conventional method of using the agricultural chemical solid preparation. Therefore, for example, Lepidopteran pests that mitigate and damage useful plants for agriculture and horticulture, such as Spodoptera littura, Coffhalocrocis medinalis, rice beetle (Parnara guttata), and diamondback moth (Pluttella maculipenni)
s), Pieris rapae crucivora (Pieris rapae crucivora), Chisel suppressalis, Tobacco moth (Helicove)
rpa assulta), armyworm (Leucania separata), armyworm (Momestra brassicae), cockroach Monambus (Ad
oxophyesorana), kinmonhosoga (Lithocolletis rin)
gonialla), Watanomaiga (Cnaphalocrocis medinali)
s), larvae such as pearl moth (Phthorimaea operculella), and pests of the order Coleoptera, for example, Epilachna vigintioctopunctata and urchin beetle (Aul).
acophora femoralis), Phyllotret beetle
a stiolata), rice weevil (Lissorhoptrus oryz)
aphilus), rice weevil (Echinocnemus squameus),
Larvae such as Oedema oryzae, orthoptera pests such as Locusta migratori
a) and other larvae, hemiptera pests such as rice black stink bugs (Scotinopharalurida) and nasi gumbai (Stophaniti)
s nashi), the brown planthopper (Laodelphax stiatellu)
s), brown planthopper (Niloparuata lugens), leafhopper (Nephotettix cincticeps), scale insect (Unaspis yannonensis), soybean aphid (A)
phis glycines), cotton aphid (Aphis gossypii)
Such as larvae and spider mites, for example, worm mites (Tetraych
us urticae), citrus spider mite (Panongchus citri), apple spider mite (Fanonychus ulmi), and nematodes parasitic on the roots of plants, such as plant and garden pests such as Meloidogyne hapla, and corn elephants that eat grain (Sitophilus) zeamais), storage insects such as Tribolum castaneum, domestic insects such as squid (Tinea pellionella), which feed on wool, leather, and paper, Attagenus piceus, and domestic insects such as Ctenolepisma villosa, and direct indirect contact with humans and animals. Culex pipiens, which is harmful to humans, Nippon Yamabyu (Simulium nacojapi), Musca domestica (Mus)
ca domestica), Fruit fly (Lucilia caesar), Black cockroach (Periplaneta fuliginosa), Blue cockroach (Blattala germanica), Yamato mite (lxodes japonen)
sis) or other livestock pests, or a strong comorbid killing power against, for example, rice fever bacterium, leaf wilt bacterium, pneumococcal fungus, sesame leaf blight, etc. Not only the pathogenic fungi of rice but also the pathogenic fungi that cause diseases in many crops such as sugar beet, for example, cucumber gray blight fungus, citrus fungal kernel fungus, pod gray mold fungus, etc. , Paddy annual weeds such as Scutellaria japonica, Azena, Abume, Cyperus, perennial weeds such as Matsubai, Heraomodaka, Hirumushiro, young firefly with leaf age,
It is possible to control Mizugaya, etc.

Therefore, the solid pesticide preparation of the present invention has extremely few side effects, is safe, is simple, inexpensive, and can exhibit an excellent action and effect even after storage for a long time, and therefore is extremely useful to those skilled in the art.

[Working] Test Example 1 Particle size distribution and powder of the powder of the agricultural chemical solid preparation of the present invention (the powder obtained in the following Example 1) and the powder manufactured by the usual production method (the powder obtained in the following Comparative Example 1) The temperature was measured immediately after production and after storage at room temperature (-5 to 35 ° C) for 3 years, and the results are shown in Table-1.

Control Example 1 (Powder) Etofenprox 5 parts (hereinafter “part” means “part by weight”)
Is melted by heating (60 ° C.), this is added to a mixture of 90 parts of clay and 5 parts of white carbon, and the mixture is ground after mixing.

Particle size distribution measurement method: 50 g of the sample powder was put into a JIS standard sieve having an inner diameter of 200 mm and sieved with a low tap machine for 30 minutes for measurement.

Fineness measurement method (Pesticide official test method): Take 50 g of the sample powder in a 200 ml beaker, add 80 ml of water containing 1% of surfactant (sodium dodecylbenzene sulfonate), and mix well by using a glass rod to disperse. ， Samples are sieve net [fluid frame inner diameter 20cm, depth 4.5cm
Standard sieve (300 mesh, 46μ) is used]. Pour 100 ml of water into the remaining sample, transfer to the sieve mesh in the same manner, and repeat this operation to transfer all the materials in the beaker to the sieve mesh. Next, gently pour water into the sample little by little from the rubber tube [rubber tube has an inner diameter of about 1 cm and a water flow rate of 4 to 5 per minute as standard], and shake the sieve horizontally to pass the sample. After almost no sample is found in the runoff water, the samples remaining on the sieve net are gathered in the corner of the net and water injection is stopped. Wipe off a small amount of water with a washing bottle, wash the remaining material in the evaporation dish, leave it for a while, discard the supernatant liquid by decanting, dry on a water bath, weigh the residue, and measure the amount of sample passing. Calculate the percentage.

Test Example 2 Powder of a wettable powder (a wettable powder obtained in the following Example 2) of the agricultural chemical solid preparation of the present invention and a wettable powder produced by a usual production method (a wettable powder obtained in the following Comparative Example 2) Degree and suspension rate were measured immediately after production and after storage for 1 year at room temperature (-5 to 35 ° C),
The results are shown in Table-2.

Control Example 2 (wettable powder) 8 parts of etofene blocks were dissolved by heating (60 ° C), adsorbed on 10 parts of white carbon, and pulverized, and then 3 parts of calcium lignin sulfonate, Dixsol WK (Daiichi Kogyo Seiyaku Co., Ltd.) 3 parts of surfactant) and 76 parts of diatomaceous earth are added, and the mixture is further pulverized after mixing.

Fineness measurement method: Same as in Test Example 1 Suspension rate measurement method (Pesticide official test method): 10 g of sample wettable powder (active ingredient Ag) was weighed in a beaker, and water with a hardness of 3 degrees at 2 ° C. Water preparation method: Dissolve 0.3077 g of calcium carbonate and 0.092 g of magnesium oxide in a small amount of dilute hydrochloric acid, evaporate to dryness in a sand bath to remove hydrochloric acid, and dilute to 1 with water. This water has a hardness of 30 degrees, so it should be diluted 10 times when used.] Add 50 ml to mix well and disperse well, and transfer a 250 ml stoppered graduated cylinder.
Same as above, add water with a hardness of 3 degrees to 250 ml and let stand for 15 minutes, then vigorously invert 30 times a minute, shake for 5 minutes. Next, put a 25 ml whole pipette into the liquid, keep the tip in the center of the liquid, gently suck 25 ml of the test liquid, and measure the content of the active ingredient (Bg). Then, the suspension rate is calculated by the following formula.

As a result of Test Examples 1 and 2, as compared with the dusts and wettable powders obtained by the usual production method, the dusts and wettable powders of the present invention to which a high-boiling-point solvent is added can suppress the formation of coarse particles over time. I know what I can do.

[Examples] Next, examples of the present invention will be described, but the present invention is not limited to these examples. In addition, all the ratios indicate parts by weight.

Example 1 (Dust) 5 parts of etophene blocks are dissolved in 10 parts of ethyl benzoate while heating (60 ° C.), and this is added to a mixture of 80 parts of clay and 5 parts of white carbon, and the mixture is pulverized after mixing.

Example 2 (Wettable powder) 8 parts of etofenprox were dissolved with heating (60 ° C.) together with 16 parts of ethyl benzoate, and 10 parts of white carbon,
Calcium lignin sulfonate 3 parts, Dixsol WK
(Surfactant manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 3 parts and 60 parts of diatomaceous earth are added to the mixture, and the mixture is pulverized.

[Effects of the Invention] A solid agricultural chemical formulation containing a solid agricultural chemical component with a melting point of 70 ° C or less obtained in the present invention can be manufactured at low cost, has extremely low toxicity, and the active ingredient does not change over time. It is an excellent pesticide. Therefore, the present invention has a melting point of 70 ° C.
It is possible to provide a pesticide solid formulation containing a pesticide component that is solid at room temperature, which is superior to conventional products in terms of efficacy, toxicity and economy.

Claims (3)

(57) [Claims] 1. A melting point dissolved in one or more high boiling point solvents selected from (i) aromatic carboxylic acid ester, (ii) aliphatic carboxylic acid ester having 10 or more carbon atoms.
A pesticide solid preparation which prevents a change with time, which is characterized in that a pesticide component which is solid at room temperature at 70 ° C or lower is carried on a solid carrier. 2. A pesticide component which is solid at room temperature and has a melting point of 70 ° C. or less is 3-
Phenoxybenzyl 2- (4-ethoxyphenyl)-
The agricultural chemical solid preparation according to claim (1), which is 2-methylpropyl ether. 3. A melting point dissolved in one or more high boiling point solvents selected from (i) aromatic carboxylic acid ester, (ii) aliphatic carboxylic acid ester having 10 or more carbon atoms.
A method for preventing a change with time of an agrochemical component which is solid at room temperature at 70 ° C. or lower, which is carried on a solid carrier.