Fenoxaprop-p-ethyl

TC & FORMULATION: 95%TC, 10%EC, 69G/L EW

Structure Formula:

NOMENCLATURE

fenoxaprop-P-ethyl

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

CAS RN [71283-80-2]

PHYSICAL CHEMISTRY

fenoxaprop-P-ethyl

Mol. wt. 361.8  M.f. C18H16ClNO5  Form White, odourless solid.  M.p. 89-91 ºC  V.p. 5.3 ´ 10-4 mPa (20 ºC)  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 ºC). In acetone 200, toluene 200, ethyl acetate >200, ethanol c. 24 (all in g/l, 20 ºC).  Stability Fenoxaprop-P-ethyl is stable for 90 d at 50 ºC. Not sensitive to light. Decomposed by acids and alkalis, DT50 >1000 d (pH 5), 100 d (pH 7), 2.4 d (pH 9) (20 ºC). 

APPLICATIONS

fenoxaprop-P-ethyl

Biochemistry Fatty acid synthesis inhibition in grasses, by inhibition of acetyl CoA carboxylase (ACCase).  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.  Uses 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 mefenpyr-diethyl) annual and perennial grass weeds and wild oats in wheat, rye, triticale and, depending on ratio, in some varieties of barley. Phytotoxicity Non-phytotoxic to broad-leaved crops.  Formulation types EC; EW; SE.  

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