Bifenthrin

TC & FORMULATION: 97%TC, 100G/L EC, 20% EC,10% EW

Structure Formula:  

NOMENCLATURE

Common name bifenthrin (BSI, ANSI, draft E-ISO); bifenthrine ((f) draft F-ISO)

IUPAC name 2-methylbiphenyl-3-ylmethyl (Z)-(1RS,3RS)-3-(2-chloro-3,3,3-trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate

Roth: 2-methylbiphenyl-3-ylmethyl (Z)-(1RS)-cis-3-(2-chloro-3,3,3-trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate 

Chemical Abstracts name (2-methyl[1,1'-biphenyl]-3-yl)methyl 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylate 

CAS RN [82657-04-3]  Development codes

PHYSICAL CHEMISTRY

Composition Material contains ³97% cis- isomer, £3% trans- isomer.  Mol. wt. 422.9  M.f. C23H22ClF3O2  Form Viscous liquid; crystalline or waxy solid.  M.p. 68-70.6 °C  V.p. 0.024 mPa (25 ºC)  KOW logP >6  Henry 1.02 ´ 102 Pa m3 mol-1 (calc.)  S.g./density 1.210 (25 ºC)  Solubility In water <1 mg/l. Soluble in acetone, chloroform, dichloromethane, diethyl ether, and toluene. Slightly soluble in heptane and methanol.  Stability Stable for 2 y at 25 ºC and 50 ºC (tech.). In natural daylight, DT50 255 d; stable 21 d at pH 5-9 (21 ºC).  F.p. 165 ºC (Tag open cup); 151 ºC (Pensky-Martens closed cup) 

APPLICATIONS

Biochemistry Acts on the nervous system of insects, disturbs the function of neurons by interaction with the sodium channel.  Mode of action Contact and stomach action.  Uses Effective against a broad range of foliar pests, including Coleoptera, Diptera, Heteroptera, Homoptera, Lepidoptera and Orthoptera; it also controls some species of Acarina. Crops include cereals, citrus, cotton, fruit, grapes, ornamentals and vegetables. Rates range from 5 g/ha against Aphididae in cereals to 45 g/ha against Aphididae and Lepidoptera in top fruit. Formulation types EC; GR; SC; UL; WP.  Compatibility Not compatible with alkaline materials. 

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