Haloxyfop-R-methyl

TC & FORMULATION: 95%TC, 108G/L EC

Structure Formula: 

NOMENCLATURE

haloxyfop-P-methyl

IUPAC name methyl (R)-2-[4-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenoxy]propionate 

Chemical Abstracts name methyl (R)-(+)-2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoate 

Other names haloxyfop-R  CAS RN [72619-32-0]  EEC no. 406-250-0 

PHYSICAL CHEMISTRY

haloxyfop-P-methyl

Composition The (R)- isomer of haloxyfop-methyl.  Mol. wt. 375.7  M.f. C16H13ClF3NO4  Form Clear brown, odourless liquid.  B.p. >280 ºC  V.p. 0.328 mPa (25 ºC)  KOW logP = 4.00  Henry 1.1 ´ 10-3 Pa m3 mol-1 (20 °C, calc.)  S.g./density 1.372 (20 °C)  Solubility In water 9.08 mg/l (25 ºC). In acetone, cyclohexanone, dichloromethane, ethanol, methanol, toluene, xylene >1 kg/l (20 ºC).  Stability DT50 in water 100 d (pH5), 48 d (pH7), 52 h (pH9) (all 25°C).  F.p. 186 °C 

APPLICATIONS

Biochemistry Fatty acid synthesis inhibitor, by inhibition of acetyl CoA carboxylase (ACCase).  Mode of action Haloxyfop-P-methyl is a selective herbicide, absorbed by the foliage and roots, and hydrolysed to haloxyfop-P, which is translocated to meristematic tissues, and inhibits their growth.  Uses Haloxyfop-P-methyl is used post-emergence for control of annual and perennial grasses in sugar beet, fodder beet, oilseed rape, potatoes, leaf vegetables, onions, flax, sunflowers, soya beans, vines, strawberries, and other crops. Applied at 52-104 g a.e./ha. Formulation types EC.  

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