Insecticidal composition and method of controlling harmful organism
An insecticidal composition of the present invention includes (1) a diamide-based insecticidal active ingredient; (2) a solvent having 5 or more of a relative dielectric constant (ε r ) and 38 kcal/mol or more of a transition energy (ε T (30)); (3) a nonionic surfactant; and (4) a nonpolar solvent that is contained in an amount less than 30% by weight with respect to a total amount of the composition.
1. An insecticidal composition comprising:
(1) a diamide-based insecticidal active ingredient;
(2) a solvent having 5 or more of a relative dielectric constant (ε r ) and 38 kcal/mol or more of a transition energy (ε T (30));
(3) a nonionic surfactant; and
(4) a nonpolar solvent that is contained in an amount less than 30% by weight with respect to a total amount of the composition,
wherein (2) the solvent is one or more selected from the group consisting of N,N′-dimethylpropylene urea, N-methylpyrrolidone, dimethylsulfoxide, 3-methoxy-N,N-dimethylpropanamide, N-butylpyrrolidone, cyclohexanone, 3-butoxy-N,N-dimethylpropanamide, methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate, N,N-dimethyloctanamide, lactic acid dimethylamide, N,N-dimethyldecanamide, y-butyrolactone, 3-methyl-2-oxazodone, ethylene glycol monomethyl ether, and benzyl alcohol.
2. The composition according to claim 1 ,
wherein (2) the solvent has 5 to 78 of the relative dielectric constant (ε r ), and 38 to 52 kcal/mol of the transition energy (ε T (30)).
3. The composition according to claim 1 ,
wherein (1) the diamide-based insecticidal active ingredient is broflanilide.
4. The composition according to claim 1 ,
wherein (3) the nonionic surfactant is a phenyl ether-based surfactant.
5. The composition according to claim 4 ,
wherein the phenyl ether-based surfactant is a formalin condensate of polyoxyalkylene styrylphenyl ether.
6. The composition according to claim 1 ,
wherein a content of (1) the diamide-based insecticidal active ingredient is 0.1% to 30% by weight with respect to the total amount of the composition.
7. The composition according to claim 1 ,
wherein the composition is in a liquid state.
8. A method of controlling a harmful organism, comprising:
applying the insecticidal composition according to claim 1 to a plant, a soil, or a water surface.
9. The composition according to claim 5 , wherein the polyoxyalkylene styrylphenyl ether is polyoxyalkylene monostyrylphenyl ether, polyoxyalkylene distyrylphenyl ether, or polyoxyalkylene tristyrylphenyl ether.