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Difenoconazole
Acetamiprid Cartap
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Metalaxyl-M Nicosulfuron
Thiamethoxam Clopyralid
Emamectin Benzoate Fenoxaprop-p-ethyl
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Products >> Herbicides >> Fenoxaprop-p-ethyl

Fenoxaprop-p-ethyl

Fenoxaprop-p-ethyl 95%TC, Fenoxaprop-p-ethyl 6.9%EW, Fenoxaprop-p-ethyl 7.5%EC

Herbicide
HRAC A WSSA 1; aryloxyphenoxypropionate

Fenoxaprop-ethyl


Fenoxaprop-p-ethyl NOMENCLATURE
Chemical Abstracts name ethyl (R)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoate
CAS RN [71283-80-2] Development codes Hoe 046360 (Hoechst); AE F046360 (AgrEvo)

fenoxaprop-P
Common name fenoxaprop-P (BSI, draft E-ISO, (m) draft F-ISO)
IUPAC name (R)-2-[4-(6-chloro-1,3-benzoxazol-2-yloxy)phenoxy]propionic acid; (R)-2-[4-(6-chlorobenzoxazol-2-yloxy)phenoxy]propionic acid
Chemical Abstracts name (R)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acid
CAS RN [113158-40-0] Development codes Hoe 088406 (Hoechst); AE F088406 (AgrEvo)

Fenoxaprop-p-ethyl 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. Selected tradenames: 'Furore Super' (Aventis); 'Puma' (Aventis); 'Whip Super' (Aventis); mixtures: 'Puma Super' (+ mefenpyr-diethyl) (Aventis)

Fenoxaprop-p-ethyl OTHER TRADENAMES

'Acclaim Super' (Aventis); 'Bugle' (Aventis); 'Depon Super' (Aventis); 'Option II' (Aventis); 'Ricestar' (with safener) (Aventis); 'Silverado' (Aventis); 'Triumph' (Aventis); 'Whip 360' (Aventis) mixtures: 'Cheetah Super' (+ mefenpyr-diethyl) (Aventis); 'Cheyenne' (+ MCPA-2-ethylhexyl) (Aventis); 'Corniche' (+ diclofop-methyl) (Aventis); 'Dakota' (+ MCPA-2-ethylhexyl) (Aventis); 'Dopler' (+ diclofop-methyl+ mefenpyr-diethyl) (Aventis); 'Fusion' (+ fluazifop-P-butyl) (Syngenta, Aventis); 'Horizon 2000' (+ fluazifop-P-butyl) (Aventis); 'Puma Extra' (+ isoproturon) (Aventis); 'Puma S' (+ mefenpyr-diethyl) (Aventis); 'Puma X' (+ isoproturon) (Aventis); 'Tigress Ultra' (+ diclofop-methyl) (Aventis); 'Twister' (+ fluazifop-P-butyl+ fomesafen-sodium) (Syngenta)

Fenoxaprop-p-ethyl ANALYSIS
Details on hplc method are available from Aventis.

MAMMALIAN TOXICOLOGY
fenoxaprop-P-ethyl
Oral Acute oral LD50 for rats 3150-4000, mice >5000 mg/kg. Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Inhalation LC50 (4 h) for rats >1.224 mg/l air. NOEL (90 d) for rats 0.75 mg/kg b.w. daily (10 ppm), mice 1.4 mg/kg b.w. daily (10 ppm), dogs 15.9 mg/kg b.w. daily (400 ppm).

Fenoxaprop-p-ethyl ECOTOXICOLOGY
Birds Acute oral LD50 for bobwhite quail >2000 mg/kg. Fish LC50 (96 h) for bluegill sunfish 0.58, rainbow trout 0.46 mg/l. Daphnia LC50 (48 h) 0.56 (pH 8.0-8.4), 2.7 (pH 7.7-7.8) (both mg/l). Algae LC50 (72 h) for Scenedesmus subspicatus 0.51 mg/l. Bees LC50 (contact) >300 mg/bee; (feed) >1000 mg/bee. Worms LC50 (14 d) for Eisenia foetida >1000 mg/kg soil.

Fenoxaprop-p-ethyl ENVIRONMENTAL FATE
Plants In plants, fenoxaprop-ethyl is metabolised via fenoxaprop to 6-chloro-2,3-dihydrobenzoxazol-2-one. Soil/Environment In soil, fenoxaprop-ethyl is rapidly hydrolysed to fenoxaprop (A. E. Smith, J. Agric. Food Chem., 1985, 33, 483); DT50 1-10 d.

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