Cypermethrin

Product name
cypermethrin
function
insecticide
specification
100gl ec
chemical name
[1a(s*),3a]-(?-cyano(3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylate
cas no.
67375-30-8
empirical formula
c22h19cl2no3
toxicology
oral acute oral ld50 for rats 57 mgkg (in corn oil).
Skin and eye acute percutaneous ld50 for rats and rabbits >2000 mg tech.kg; minimal irritant to the eyes of rabbits.
Inhalation lc50 (4 h, nose only) for rats >0.593 mgl (maximum attainable concentration). noel noael (1 y) for dogs >60 mgkg diet (1.5 mgkg b.w. Daily).
Adi 0.02 mgkg b.w. (jecfa evaluation) [1996]; 0.015 mgkg b.w. (basf).
Other non-mutagenic. Toxic to cns and peripheral motor nerves; neuro-behavioural changes reversible within 3 days following a single dose. Acute rat study noael 4 mgkg b.w. (in corn oil); 4 week oral rat study noael 10 mgkg b.w. Daily (in dmso). May cause paresthesia.
Toxicity class who (a.i.) ii
applications
mode of action non-systemic insecticide with contact and stomach action. Acts on the central and peripheral nervous system in very low doses. uses control of a wide range of chewing and sucking insects (particularly lepidoptera, coleoptera, and hemiptera) in fruit (including citrus), vegetables, vines, cereals, maize, beet, oilseed rape, potatoes, cotton, rice, soya beans, forestry, and other crops; applied at 10-15 gha. Control of cockroaches, mosquitoes, flies, and other insect pests in public health; and flies in animal houses. Also used as an animal ectoparasiticide.