FENOXAPROP-P-ETHYL

Common name: Fenoxaprop-P-ethyl

Chemical name: ethyl ( R )-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoate
Structural formula:

Chemical class: 2-(4-aryloxyphenoxy)propionic acid herbicide

CAS No.: 71283-80-2

Properties: Technical product is white powder. M.p. 155-161 ℃ . V.p. 1.8 × 10 -1 mPa (20 ℃ ). Soluble in water 0.27 (pH 5.1), 61 (pH 7.0) (both in g/L, 20 ℃ ). In acetone 80, toluene 0.5, ethyl acetate 36, methanol 34 (all in g/L, 20 ℃ ).

Toxicity: Acute oral LD 50 for rats 3150-4000, mice ﹥ 5000 mg/kg. Acute percutaneous LD 50 for rats ﹥ 2000 mg/kg. Inhalational, LC 50 (4 h) for rats ﹥ 1.224 mg/L air.

Ecotoxicology: Birds, acute oral LD 50 for bobwhite quail ﹥ 2000 mg/kg. Fish, LC 50 (96 h) for bluegill sunfish 0.58, rainbow trout 0.46 mg/L. Bees, LC 50 (contact) ﹥ 300 μ g/bee, (feed) ﹥ 1000 μ g/bee. Worms, LC 50 (14 d) for Eisenia foetida ﹥ 1000 mg/kg soil. Daphnia, LC 50 (48 h) 0.56 (pH 8.0-8.4), 2.7 (pH 7.7-7.8) (both mg/L).

Treatment: Get medical aid. Symptomatic treatment.

Mode of action: Fenoxaprop-P-ethyl is a selective herbicide with contact and systemic action, absorbed principally by the leaves, with translocation both acropetally and basipetally to the roots or rhizomes.

Usage: Post-emergence control of annual and perennial grass weeds in potatoes, beans, soya beans, beets, vegetables, peanuts, flax, oilseed rape, and cotton; and annual and perennial grass weeds and wild oats in wheat, rye, triticale and, depending on ratio, in some varieties of barley.