Clodinafop-propargyl

TC & FORMULATION: 96%TC, 8%EC, 15%WP

Structure Formula: 

NOMENCLATURE

clodinafop-propargyl

Common name clodinafop-propargyl

IUPAC name prop-2-ynyl (R)-2-[4-(5-chloro-3-fluoropyridin-2-yloxy)phenoxy]propionate 

Chemical Abstracts name propynyl (R)-2-[4-[(5-chloro-3-fluoro-2-pyridinyl)oxy]phenoxy]propanoate 

CAS RN [105512-06-9]; [105511-96-4]

PHYSICAL CHEMISTRY

clodinafop-propargyl

Composition (R)- isomer.  Mol. wt. 349.7  M.f. C17H13ClFNO4  Form Colourless crystals.  M.p. 59.5 ºC; (tech., 48.2-57.1 ºC)  V.p. 3.19 ´ 10-3 mPa (25 ºC) (OECD 104)  KOW logP = 3.9 (25 ºC)  Henry 2.79 ´ 10-4 Pa m3 mol-1 (calc.)  S.g./density 1.37 (20 °C)  Solubility In water 4.0 mg/l (pH7, 25 ºC). In ethanol 97, acetone 880, toluene 690, n-hexane 0.0086, n-octanol 25 (all in g/l, 25 ºC).  Stability Relatively stable in acidic media at 50 ºC, hydrolyses in alkaline media; DT50 (25 ºC) 64 h (pH 7), 2.2 h (pH 9).

APPLICATIONS

clodinafop-propargyl

Biochemistry Fatty acid synthesis inhibitor, by inhibition of acetyl CoA carboxylase (ACCase).  Mode of action Post-emergence, systemic grass herbicide. Phytotoxic symptoms appear within 1-3 weeks, affecting meristematic tissue.  Uses Used for post-emergence control of annual grasses, including Avena, Lolium, Setaria, Phalaris and Alopecurus, in cereals, at 30-60 g/ha. Phytotoxicity Low toxicity to spring and winter wheat.  Formulation types EC; WP.  Compatibility Mainly used in combination with the safener cloquintocet-mexyl.  

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