decamethrin* (rejected common name proposal)

(S)-a-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate

C₂₂H₁₉Br₂NO₃

Form Colourless crystals.

Melting point 100-102℃. Density Bulk density 0.55 g/cm³ (25℃).

Solubility In water <0.2 mg/l (25℃). In dioxane 900, cyclohexanone 750, dichloromethane 700, acetone 500, benzene 450, dimethyl sulfoxide 450, xylene 250, ethanol 15, isopropanol 6 (all in g/l, 20℃).

Oral Acute oral LD50 for rats ranges from 135->5000 mg/kg, depending upon carrier and conditions of the study; for dogs >300 mg/kg. Acute oral LD50 for formulations in rats: >2000 mg (of 15 g/l EC)/kg; 445 mg (of 25 g/l EC)/kg; >5000 mg (of 5 g/l UL)/kg; >16 000 mg (of 25 g/kg WP)/kg; >40 000 mg (of 25 g/l SC)/kg. Skin and eye Acute percutaneous LD50 for rats and rabbits >2000 mg/kg. Non-irritating to skin; mild eye irritant (rabbits). Inhalation LC50 (4 h) for rats 2.2 mg/l air; (1 h) >4.6 mg/l air (micronised).

A potent insecticide, effective by contact and ingestion against a wide range of pests. Crop protection uses include: Coleoptera, Heteroptera, Homoptera, Lepidoptera and Thysanoptera in cereals, citrus, cotton, grapes, maize, oilseed rape, soya beans, top fruit and vegetables. It controls Acrididae, and is recommended against locusts. Soil surface sprays control Noctuidae. It is used against indoor crawling and flying insects and pests of stored grain and timber (Blattodea, Culicidae, Muscidae). Dip or spray, and pour-on applications give good control of Muscidae, Tabanidae, Ixodidae and other Acari on cattle, sheep and pigs, etc.

Description: White to pale yellow powder, free from visible extraneous matter;

Active Ingredient Content(w/w): ≥98%;

Water (w/w): ≤0.5%;

Acetone Insoluble Material(w/w): ≤0.5%