alfoxylate*; alphamethrin*(rejected common name proposals

A racemate comprising (S)-a-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate and (R)-a-cyano-3-phenoxybenzyl (1S,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate

C₂₂H₁₉Cl₂N₂O₃

Form White to pale powder, with a weak aromatic odour.

Melting point 81.5℃.

Density 1.28 (22℃).

Solubility In water 0.67 (pH 4), 3.97 (pH 7), 4.54 (pH 9), 1.25 (double distilled water) (all in g/l, 20℃). In n-hexane 6.5, toluene 596, methanol 21.3, isopropanol 9.6, ethyl acetate 584, acetone:hexane >0.5 (all in g/l, 21℃); miscible in dichloromethane and in acetone (>10g/l).

Oral Acute oral LD50 for rats 57 mg/kg (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 mg/l (maximum attainable concentration).

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. Control of cockroaches, mosquitoes, flies, and other insect pests in public health; and flies in animal houses. Also used as an animal ectoparasiticide.

Description: White crystal, free from visible extraneous matter;

Active Ingredient Content(w/w): ≥97%;

Water (w/w): ≤0.5%;

Acidity (as H2SO4)(w/w): ≤0.2%;

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