JPH0635361B2 - Pesticide composition in suspension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention uses a pesticidal drug substance that is solid at room temperature and hardly soluble in water as an active ingredient, and that has stable properties over a long period of time. It relates to a turbid pesticide composition.

(Prior Art) Conventionally, it is difficult to emulsify or liquefy pesticide raw materials that are poorly soluble in water or organic solvents.
Although it has been generally used in the form of granules and the like, powders can be directly sprayed with a sprayer as they are, or they have many excellent aspects such as easy formulation, but they are often scattered around when sprayed. It has drawbacks such as the above and tends to decrease in recent years. Instead, the amount of granules tends to increase, but granules have drawbacks such as relatively high manufacturing cost. Also, the wettable powder is diluted with water to a predetermined concentration and sprayed, but in the case of the wettable powder, most pesticide raw materials can be processed into this dosage form, but a diluted solution used for spraying is prepared. It has a drawback that it is difficult to use it for aerial spraying, such as causing a sedimentation phenomenon between the time and spraying.

On the other hand, among pesticides, there is a spraying agent in which a poorly water-soluble solid drug substance is prepared as a fine particle in a hydrophilic medium or water in the form of a dispersion suspension. For such a preparation, various manufacturing methods have been proposed so far. For example, when the pesticide raw material is poorly soluble in solvents, the pesticide raw material that cannot be emulsified is used as a dosage form having properties close to those of an emulsion, and a hydrophobic solid pesticide is used as a dispersion medium in water to form a surfactant and water-soluble such as carboxymethyl cellulose. Dispersing agent prepared by adding a polymer to prepare a suspension (see Japanese Patent Publication No. 58-24401), a formulation prepared by suspending with a heteropolysaccharide rubber and a nonionic surfactant (see Japanese Patent Publication No. 53-46889). In addition, a method using water, a surfactant and a hydrophobic organic solvent such as kerosene, toluene and liquid paraffin (Japanese Patent Publication No. 52-634).
A number of methods have been proposed, such as Japanese Patent No. 3). A spray agent prepared by dispersing and suspending particles of the active ingredient by using an organic solvent in the hydrophilic medium or water or a part of water is generally called a sol agent. The physical properties required for a sol agent are that the suspended particles of the drug substance do not cause sedimentation or separation even if the sol agent is stored for a long period of time. That is, it has good storage stability. Sedimentation separation eventually forms a hard baking layer, which grows into a non-dispersible sedimentation and lacks performance as a spraying agent.

It is known that sol agents are often applied by aerial application, but if the chemical solution drifts and scatters and adheres to the painted parts such as automobiles and color tin roofs, there should be no damage or damage to the paint.

Even if the chemical solution adheres to the inner wall of the tank of the spraying device and is dried and solidified, it can be easily dispersed and washed by washing with water.

In air spraying, it has excellent compatibility with other spraying agents such as insecticides and bactericides, and can be sprayed simultaneously.

Do not cause chemical damage to the crops for control as well as neighboring crops due to large amount of adhesion.

There is no danger of ignition even if the formulation is not diluted with water and used as it is for spraying.

And so on.

(Problems to be Solved by the Invention) None of the above-mentioned various known techniques can satisfy various conditions of physical properties required for a sol agent. For example, water of Japanese Patent Publication No. 58-24401 is used. Suspended pesticides containing a surfactant and a water-soluble polymer as the dispersion medium have the drawbacks of poor storage stability and peeling dispersibility.
The flowable aqueous biocide composition comprising a nonionic surfactant of No. 3-46889, a heteropolysaccharide rubber, and water has a viscosity range of about 8000 to 30,000 cps, which is similar to a paste and has a workability during preparation of a chemical solution. Remarkably difficult, the composition of Japanese Examined Patent Publication No. 52-6343 consisting of water, surfactant and solvent (kerosene, toluene, xylene, etc.) has problems of paint contamination, flammability and chemical damage. It does not fully satisfy the physical properties to be solved.

The present invention has been made to solve these conventional problems, and its purpose is storage stability of sol formulation, damage contamination to coating, etc., dispersibility and washing of dry matter adhering to chemicals, and mixing with other agents. The present invention aims to provide a pesticidal composition in the form of a suspension, which has been improved to such an extent that problems of concern such as properties, phytotoxicity due to a large amount of adherence, flammability, etc. are solved or there is no practical problem.

(Means for Solving the Problem) The suspension-type agrochemical composition of the present invention is a solid at room temperature and is 10 to 50% by weight of a poorly water-soluble agrochemical source, polyoxyethylene styrenated phenol ether sulfate, or Phosphate 3
Anionic surfactant containing 0 to 100% by weight 1 to 20
% By weight, 2.0 to 20.0% by weight of petroleum-based hydrocarbon solvent having 90 to 90% by weight of methane series hydrocarbons having 9 to 17 carbon atoms, 0.05 to 0.5% by weight of heteropolysaccharide rubber and water. Consists of.

The pesticide composition in suspension of the present invention uses an anionic surfactant as a surfactant, and in particular, it contains polyoxyethylene styrenated phenol ether sulfate or phosphate in an amount of 30 to 1
One of the characteristics is that it contains 100% by weight (based on the total anionic surfactant).

The surfactant polyoxyethylene styrenated phenol ether sulfate or phosphate used in the present invention has a degree of polymerization of ethylene oxide of 10 to 15 mol and a degree of polymerization of styrene of 1
~ 3 mol, and as the sulfate or phosphate, sodium salt, ammonium salt or magnesium salt is used.

As other anionic surfactants, aromatic sulfonic acid formalin condensed salts, dialkyl sulfosuccinates, alkylallyl sulfonates, alkylbenzene sulfonates, alkylnaphthalene sulfonates, higher alcohol sulfates, etc. may be added. Good.

Next, the methane-series hydrocarbon solvent having 9 to 17 carbon atoms used in the present invention is different from kerosene, which is widely used as an organic solvent for agricultural chemicals, and examples of physicochemical properties of both are as follows.

As described above, the methane-series hydrocarbon solvent contains high-purity paraffin by a special refining device, whereas kerosene contains paraffin, naphthene, aromatique, and the like. The amount of this solvent used is usually 2.
0 to 25.0% by weight, preferably 5.0 to 20.0% by weight.

Heteropolysaccharide rubber as a thickener used in the present invention is generally called xanthan gum, a linear high molecular weight polysaccharide produced by the fermentation action of microorganisms,
The molecular weight is about 2,000,000, and the constituent monosaccharides are glucose, mannose and glucuronic acid.

The amount of heteropolysaccharide used is 0.05 to 0.5.
%, Preferably 0.1 to 0.3% by weight and not more than 0.5% by weight.

In addition to this, in consideration of the cold resistance of the preparation, a hydrophilic solvent such as glycerin, ethylene glycol, polyethylene glycol or ethylene glycol monomethyl ether may be added to the preparation in an amount of about 5.0 to 15.0% by weight. . In addition to the formulation, the suspension-type agricultural chemical composition of the present invention may further contain 100 to 1000 ppm of a silicone antifoaming agent.

The pesticide raw material applicable to the present invention is not particularly limited as long as it is poorly soluble in water that is solid at room temperature, but the blending amount is required to be 10 to 50% by weight based on the composition.

An example of the pesticide ingredient name is 5-methyl-1,2,4
-Triazolo (3,4-b) benzothiazole (tricyclazole), 2-methyl-3-isopropoxybenzanilide (mepronil), 4,5,6,7-tetrachloroisophthalonitrile (TPN), manganese ethylenebis (Dithiocarbamate) (manneb), diethyl 4,4'-o-phenylene bis (3-thioarophanate) (thiophanate methyl), 8-oxyquinoline copper, cupric hydroxide, bactericides such as sulfur.

Dimethyl-2-chloro-1- (2,4-dichlorophenyl) vinylphosphate (dimethylvinphos), 1-naphthylmethylcarbamate (NAC), m-tolylmethylcarbamate (MTMC), 3,4-xylylmethylcarbamate (MPMC), O, S-dimethyl N-acetylphosphoramidothioate (acephate), 2-
Insecticides or acaricides such as sec-butyl-4,6-dinitrophenyl 3-methylcrotonate (vinapacryl), tricyclohexyltin hydroxide (pricktran), S-4-phenoxybutyl N, N-dimethylcarbamate (phenothiocalp).

2-chloro-4,6-bis (ethylamino) -1,3
5-triazine (CAT), 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine (gezaprim), N- (1-ethylpropyl) 3,4
Examples include, but are not limited to, herbicides such as dimethyl-2,6-dinitroaniline (Stomp). Further, the pesticide raw material is not limited to one kind, and an insecticide, a bactericide, or a mixture of both of them may be used.

The suspension pesticidal composition of the present invention has a liquid viscosity of 15 at 20 ° C. for improving storage stability for a long period of time.
The optimum value is 0 to 550 cp. Here, the liquid viscosity is measured using a B type rotational viscometer (BL type, manufactured by Tokyo Keiki). As the measurement conditions, the rotor No. 2 is used, and the liquid viscosity is measured at 20 ° C. under the condition that the rotor rotation speed is 30 rpm.

One example of the method for producing the suspended pesticide composition of the present invention will be shown in order.

First, a formulation of heteropolysaccharide rubber as a thickener is vigorously stirred using a stirrer in order to dissolve a predetermined amount of the solution in water. Next, add a predetermined amount of pesticide raw material that has been roughly crushed in advance, and further add a petroleum hydrocarbon solvent, an anionic surfactant such as polyoxyethylene styrenated phenol ether sulfate or phosphate, and if necessary. Add hydrophilic solvent ethylene glycol, defoaming agent, etc., and crush and mix with a high-speed stirrer. Next, a wet pulverizer such as a sand grinder SL type (Igarashi Machine Manufacturing Co., Ltd.)
Attritor MA-1S type (Mitsui Miike Seisakusho),
Most of the pesticide ingredient is 4μ using Dyno-Mill KDL type
m or less, preferably 0.1 to 2 μm so as to obtain a product by wet pulverization.

The order of adding the raw materials such as the drug substance and the surfactant may be appropriately changed depending on the step or the foaming property of the surfactant, but the heteropolysaccharide as a thickener is sufficiently prepared by previously using water. It is necessary to dissolve with stirring.

Examples of the present invention will be shown and described in more detail.

All "parts" in the following examples are "parts by weight".

Example 1 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 49.8 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
5 parts of polyoxyethylene styrenated sodium phenol ether sulfate (degree of polymerization of ethylene oxide = 10 mol, degree of polymerization of styrene = 1 mol), 1 part of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol, 1 carbon atom
17 parts of petroleum-based hydrocarbon solvent (manufactured by Nippon Petrochemical Co., Ltd.) containing 96% by weight of hydrocarbons in the methane series of 1 to 13 are put in a mixing tank, and crushed and mixed for 30 minutes by using a high speed stirrer. Next, silicone AF-118N (manufactured by Asahi Chemical Industry Co., Ltd.) was added to the preparation in an amount of 500 ppm and wet pulverized using a wet pulverizer to obtain a homogeneous sol preparation.

Example 2 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 49.8 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
5 parts of polyoxyethylene styrenated sodium phenol ether sulfate (degree of polymerization of ethylene oxide = 14 mol, degree of polymerization of styrene = 3 mol), 1 part of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol, 1 carbon atom
17 parts of petroleum hydrocarbon solvent containing 96% by weight of methane series hydrocarbons 1 to 13 are put into a mixing tank, and crushed and mixed for 30 minutes by using a high speed stirrer. Then Silicone AF-118
N was added to the preparation in an amount of 500 ppm and wet milled using a wet mill to obtain a homogeneous sol formulation.

Example 3 0.2 part of heteropolysaccharide rubber is mixed and dissolved in 33.1 parts of water. 40 parts of 2-methyl-3'-isopropoxybenzanilide coarsely pulverized therein, 6 parts of polyoxyethylene styrenated phenol ether sodium phosphate (degree of polymerization of ethylene oxide = 10 mol, degree of polymerization of styrene = 1 mol), dialkyl Sodium sulfosuccinate 0.5
Parts, calcium alkylaryl sulfonate 1 part, polyethylene glycol 7 parts, petroleum hydrocarbon solvent containing 98% by weight of methane series hydrocarbon having 13 to 14 carbon atoms in a mixing tank, and using a high-speed stirrer. Crush and mix for 30 minutes. Next, silicone AF-118N was added to the formulation 70 times.
Add 0 ppm and wet pulverize with a wet pulverizer to obtain a homogeneous sol preparation.

Example 4 Heteropolysaccharide rubber (0.08 part) and water (31.42)
Mix and dissolve in 1 part. Coarsely ground dimethyl-2-
Chlor-1- (2,4-dichlorophenyl) vinyl phosphate 40 parts, polyoxyethylene styrenated phenol ether magnesium sulfate (polymerization degree of ethylene oxide = 12 mol, polymerization degree of styrene = 1 mol) 7 parts, aromatic sulfone Acid formalin condensed sodium 1 part, ethylene glycol 10 parts, petroleum hydrocarbon solvent containing 97% by weight of methane series hydrocarbon having 15 to 17 carbon atoms 10 parts in a mixing tank, and crushed for 30 minutes using a high speed stirrer Mix. Next, silicone AF-118N was added to 1000 ppm to the preparation, and wet pulverization was performed by a wet pulverizer to obtain a homogeneous sol preparation.

Example 5 0.3 part of heteropolysaccharide rubber is mixed and dissolved in 39.6 parts of water. Coarsely ground N- (1-ethylpropyl) 3,4-dimethyl-2,6-dinitroaniline 30
Parts, polyoxyethylene styrenated sodium phenol ether sulfate (degree of polymerization of ethylene oxide = 15 mol, degree of polymerization of styrene = 3 mol) 8 parts, sodium alkylnaphthalene sulfonate 2 parts, ethylene glycol 5 parts, carbon number 14-16 15 parts of petroleum-based hydrocarbon solvent containing 95% by weight of the methane series hydrocarbon of (1) is put in a mixing tank, and crushed and mixed for 30 minutes by using a high speed stirrer. Next, silicone AF-
118N was added to the preparation in an amount of 500 ppm and wet-milled with a wet mill to obtain a homogeneous sol preparation.

Example 6 0.15 parts of heteropolysaccharide rubber is mixed with 33.75 of water.
Mix and dissolve in 1 part. 40 parts of m-tolyl methyl carbamate roughly crushed therein, 6 parts of sodium polyoxyethylene styrenated phenol ether phosphate (degree of polymerization of ethylene oxide = 13 mol, degree of polymerization of styrene = 2 mol), 2 parts of sodium alkylbenzenesulfonate, Carbon number 9 ~
8 parts of petroleum-based hydrocarbon solvent containing 93% by weight of hydrocarbons in the methane series of 12 was put into a mixing tank, and the mixture was stirred with a high speed stirrer for 30
Crush and mix for minutes. Next, 500 ppm of silicone AF-118N was added to the formulation and wet pulverization was performed using a wet pulverizer to obtain a homogeneous sol formulation.

Example 7 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 40.9 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
15 parts of sodium polyoxyethylene styrenated phenol ether sulfate (degree of polymerization of ethylene oxide = 15 mol, degree of polymerization of styrene = 3 mol), ethylene glycol 7
96 parts by weight of methane hydrocarbons having 11 to 13 carbon atoms
17 parts of a petroleum-based hydrocarbon solvent containing is placed in a mixing tank and crushed and mixed for 30 minutes using a high speed stirrer. Next, 500 ppm of silicone AF-118N was added to the formulation and wet-milled using a wet mill to obtain a homogeneous sol formulation.

Example 8 0.2 part of heteropolysaccharide rubber is mixed and dissolved in 28.8 parts of water. 40 parts of 2-methyl-3′-isopropoxybenzanilide coarsely pulverized therein, 12 parts of sodium polyoxyethylene styrenated phenol ether phosphate (polymerization degree of ethylene oxide = 15 mol, polymerization degree of styrene = 3 mol), Polyethylene glycol 7 parts, carbon number 13
12 parts of petroleum hydrocarbon solvent containing 98% by weight of hydrocarbons in the methane series of about 14 to 14 are put in a mixing tank, and crushed and mixed for 30 minutes by using a high speed stirrer. Then Silicone AF-118N
Was added to the formulation in an amount of 700 ppm and wet-milled with a wet mill to obtain a homogeneous sol formulation.

Reference Example 1 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 66.8 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
5 parts of sodium polyoxyethylene styrenated phenol ether sulfate (degree of polymerization of ethylene oxide = 10 mol, degree of polymerization of styrene = 1 mol), 1 part of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol were placed in a mixing tank and a high-speed stirrer was used. Crush and mix for 30 minutes. Next, 500 ppm of silicone AF-118N was added to the formulation and wet pulverization was performed using a wet pulverizer to obtain a homogeneous sol formulation.

Reference Example 2 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 49.8 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
5 parts of polyoxyethylene alkylallyl ether (degree of polymerization of ethylene oxide = 13 mol), 1 part of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol, petroleum carbonization containing 96% by weight of methane hydrocarbon having 11 to 13 carbon atoms 17 parts of hydrogen solvent is put into a mixing tank, and crushed and mixed for 30 minutes by using a high speed stirrer. Next, silicone AF-11
8 N was added to the preparation in an amount of 500 ppm and wet-milled using a wet mill to obtain a homogeneous sol preparation.

Reference Example 3 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 49.8 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
5 parts of sodium polyoxyethylene styrenated phenol ether sulfate (degree of polymerization of ethylene oxide = 10 mol, degree of polymerization of styrene = 1 mol), 1 part of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol, 17 parts of kerosene were placed in a mixing tank. Crush and mix for 30 minutes using a high speed stirrer. Next, 500 ppm of silicone AF-118N was added to the formulation and wet pulverization was performed using a wet pulverizer to obtain a homogeneous sol formulation.

Reference Example 4 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 39.8 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
Add 5 parts of sodium polyoxyethylene styrenated phenol ether sulfate (degree of polymerization of ethylene oxide = 10 mol, degree of polymerization of styrene = 1 mol), 1 part of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol, 27 parts of ligroin to the mixing tank. Crush and mix for 30 minutes using a high speed stirrer. Next, add 500 ppm of silicone AF-118N to the formulation and wet pulverize using a wet pulverizer,
A homogeneous sol formulation was obtained.

Reference Example 5 0.1 part of heteropolysaccharide rubber is mixed and dissolved in 49.8 parts of water. Coarsely ground 5-methyl-1,2,4
20 parts of triazolo (3,4-b) benzothiazole,
5 parts of sodium polyoxyethylene styrenated phenol ether sulfate (degree of polymerization of ethylene oxide = 10 mol, degree of polymerization of styrene = 1 mol), 1 part of sodium alkylbenzene sulfonate, 7 parts of ethylene glycol, 17 parts of fluid paraffin in a mixing tank. Put in and use high speed agitator for 30
Crush and mix for minutes. Next, 500 ppm of silicone AF-118N was added to the formulation and wet pulverization was performed using a wet pulverizer to obtain a homogeneous sol formulation.

Next, test examples and test results conducted on the samples prepared in Examples 1 to 8 and Reference Examples 1 to 5 will be shown.

Test Example 1 Storage stability test The storage stability is investigated using the sol formulations prepared according to Examples 1-8 and Reference Examples 1-5. The test results are shown in Table-1.

Method Put the sol preparation in a 500 ml glass bottle and store it in a 40 ° C incubator for 3 months, and investigate the separation and sedimentation of the sol preparation at regular intervals. The survey is calculated by the ratio (%) of the clear formation height (supernatant portion) to the height of the whole liquid.

Test Example 2 Impact test on automobile coating The influence on automobile coating is investigated using the sol formulations prepared according to Examples 1 to 8 and Reference Examples 1 to 5. The test result is
It shows in Table-2.

Method Put the sol formulation into a chromatographic glass spray and spray it onto the test coated plates shown below.
Put in a constant temperature oven at ℃ for a certain time (10, 20, 30, 60
Every minute), wipe the surface of the coated plate with absorbent cotton containing a neutral detergent, and inspect for the presence of drug marks.

The effect on the test coated plate was investigated by the following three-stage evaluation.

○: No trace of drug is observed.

Δ: A slight trace of drug is observed.

×: Drug marks are clearly observed.

Test Example 3 Peeling Dispersibility Test Using a sol preparation prepared according to Examples 1 to 8 and Reference Examples 1 to 5, peeling dispersibility is investigated. The test results are shown in Table-3.

Method Apply 2g of sol formulation to a 2cm x 7cm glass plate and apply at 60 ℃
After drying for 1 hour in the incubator, return to room temperature. Next, 200 ml of water was put into a 200 ml beaker, and a glass plate was immersed in the beaker for 5 minutes. Then, the peeling dispersion state of the dried product of the sol preparation was investigated while stirring with a glass bottle.

The peeling dispersion state was investigated by the following three-stage evaluation.

○: Completely peeled and dispersed.

Δ: Peeled, but slightly undispersed particles remained.

X: Peeled off but not dispersed at all.

Test Example 4 Compatibility test (circulation test by magnet pump) The compatibility is investigated using the sol preparations prepared according to Examples 1 to 8 and Reference Examples 1 to 5. The test results are shown in Table-4.

Test pump; manufactured by Iwaki, Magnet pump MD-15 type Discharge rate: adjusted to 15 / min. Put water in the beaker of Method 1 and add the reagent agent while circulating with a pump to make the total amount 800 ml. When two types of drugs were mixed, the second drug was added while the first drug was added and circulated.

The circulation time is 15 minutes, the difficulty of passage and the presence or absence of residue are investigated through a mesh of 250 mesh after the circulation, and the following three grades are evaluated.

○: Easy to pass through, with slight or no residue.

Δ: It is difficult to pass, some residue is observed, and the property is creamy.

X: Difficult to pass through, a large amount of residue was observed, and the property was okara or gum.

Test Example 5 Chemical damage test to rice and other crops The sol preparations prepared according to Examples 1 to 8 and Reference Examples 1 to 5 are used to investigate the chemical damage to rice and other crops. The test results are shown in Table-5.

Test plant: rice, sorghum, corn, watermelon, tomato, soybean Method 1 ward, 2 pots, spray gun, 1 nozzle
Place the test plant at a position of a few meters and use 5-10 ml of undiluted solution.
Was sprayed.

The degree of chemical damage is indicated according to the following criteria.

--- No abnormality ± ... Slight spots of drug spots, but no problem.

+ ... Spots of medicine are visible to the naked eye, but there is no actual harm.

・ ・ ・ Spots of drug spots are observed with the naked eye, which is actually harmful.

(Effects of the Invention) As is clear from the above description, the suspension-type agricultural chemical composition of the present invention does not cause sedimentation, separation or the like even after long-term storage.

Even if it adheres to the painted parts of automobiles and color tin roofs, the paint should not be damaged or contaminated.

Even if the chemical solution is dried and solidified, it can be easily dispersed by washing with water and can be washed.

 Do not cause chemical damage due to a large amount of adhered substances.

It has excellent compatibility with other insecticides and fungicides and can be sprayed simultaneously.

 Even when spraying the stock solution, there is no danger of catching fire.

It is excellent in such points.

Claims (1)

[Claims] 1. An active ingredient, which is a solid at room temperature and is hardly soluble in water, is 10 to 50% by weight of an agricultural chemical raw material, and polyoxyethylene styrenated phenol ether sulfate or phosphate 30 is used.
1 to 20% by weight of anionic surfactant containing 100 to 100% by weight, and 90% by weight of methane series hydrocarbon having 9 to 17 carbon atoms
A suspension-type agricultural chemical composition comprising 2 to 20% by weight of the above petroleum hydrocarbon solvent, 0.05 to 0.5% by weight of a heteropolysaccharide rubber, and water.