Common name: Fenoxaprop-P-ethyl
Chemical name: ethyl (R)-2-[4-(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoate
Chemical class: Herbicide
Molecular formula: C₁₈H₁₆ClNO₅
CAS NO.: 71283-80-2
Properties:
Form White, odourless solid. M.p. 89-91°C. V.p. 5.3×10⁻⁴ mPa (20°C). KOW logP = 4.58. Henry 2.74×10⁻⁴ Pa m³ mol⁻¹ (calc.). S.g./density 1.3 (20°C). Solubility In water 0.7 mg/l (pH 5.8, 20°C). In acetone 200, toluene 200, ethyl acetate >200, ethanol c. 24 (all in g/l, 20°C). Stability Fenoxaprop-P-ethyl is stable for 90 d at 50°C. Not sensitive to light. Decomposed by acids and alkalis, DT50 >1000 d (pH 5), 100 d (pH 7), 2.4 d (pH 9) (20°C).
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 (when applied with the herbicide safener metenpyrdiethyl) annual and perennial grass weeds and wild oats in wheat, rye, triticale and, depending on ratio, in some varieties of barley.
