Clothianidin, N- (2-chlorothiazol-5-ylmethyl) -N'-methyl-N'-nitroguanidine, C 8 H 10 ClNO 3 S is an insecticide from the class of neonicotinoids .
Content
Physical and chemical properties
- Odorless, solid, colorless powder.
- Solubility in water (20 Β° C) at pH 10 - 340 mg / l;
- Melting point 176.8 Β° C;
- Vapor pressure (25 Β° C) 2.8 β 10 -8 MPa;
- The specific gravity is 1.61 g / ml.
Insect Effect
Clothianidin, like all neonicotinoids , acts on the nicotinic acetylcholine receptors of the insect nervous system, blocking the transmission of a nerve impulse, which leads to paralysis and death of the insect. Clothianidin is an insecticide of contact, intestinal and systemic action. It is used against sucking and gnawing agricultural insect pests, including coleoptera , homoptera , diptera and lepidoptera : bread fleas, ground beetle , cruciferous fleas , wireworms , bug bug , Colorado potato beetle , weevils , cicadras , aphids , leaf mites , aphids , three locusts .
Toxic effect
Low toxicity for warm-blooded, LD50 orally for rats> 1000 mg / kg, for mallards 752 mg / kg. When administered to rats, it is rapidly absorbed from the gastrotestinal tract and excreted mainly in an unchanged state. Low toxicity for fish (SK50 for rainbow trout> 100 mg / l), aquatic invertebrates (except insects) and aquatic plants. Moderately toxic to earthworms. Very toxic to bees (LD50 4 ng / individual) and other beneficial arthropods ( riders , predatory mites ).
Due to its high toxicity to bees, clotianidin is prohibited in the EU for outdoor use [1] .
Relatively stable in soil, half-life reaches 300 days. Quickly undergoes water photolysis (half-life of 0.1 days).
Registered preparations belong to the third hazard class for humans and the first hazard class for bees.