Cypermethrin pesticide
CAS No: [52315-07-8] (formerly [69865-47-0], [86752-99-0] and many other numbers)
MF.: C22H19Cl2NO3
MW: 416.3
M. P.: 61-83 º C, depending on isomer ratio
V. P.: 2.0 *10-4 mPa (20º C)
F. P.: Not autoflammable; Non-explosive
S. G.: 1.24 (20º C)
Appearance: Pure is Odourless crystals
Formulation types: 95%TECH, 20%EC, 10%EC, 5%EC
Solubility.: In water 0.004 mg/l (pH 7). In acetone, chloroform, cyclohexanone, xylene >450, ethanol 337, hexane 103 (all in g/I, 20º C)
Stability: Relatively stable in neutral and weakly acidic media, with optimum stability at pH 4. Hydrolysed in alkaline media; DT50 1.8 d (pH 9, 25º C); Stable at pH 5 and 7 (20º C). Relatively stable to light in field situations. Thermally stable up to 220º C
Toxicological information:
Oral: Acute oral LD50 for rats 250-4150 (tech. 7180), mice 138 mg/kg.
Skin and eye: Acute percutaneous LD50 for rats >4920, rabbits >2460 mg/kg. Slight skin and eye irritant (rabbits). May be a weak skin sensitiser.
Purpose: Control of a wide range of insects, especially Lepidoptera, but also Coleoptera, Diptera, Hemiptera, and other classes, in fruit (including citrus), vines, vegetables, potatoes, cucurbits, lettuce, capsicums, tomatoes, cereals, maize, soya beans, cotton, coffee, cocoa, rice, pecans, oilseed rape, beet, ornamentals, forestry, etc. Control of flies and other insects in animal houses; And mosquitoes, cockroaches, houseflies and other insect pests in public health. Also used as an animal ectoparasiticide.
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