IDENTIFICATION

Common name:    Bifenthrin

Other 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

Chemical abstracts name:   (2-methyl [1,1′-biphenyl]-3-yl) methyl 3-(2-chloro-3,3,3- trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylate

Type: Insecticide for Agriculture

CAS RN: [82657-04-3]

M.F. :C₂₃H₂₂ClF₃O₂

Mol Wt :422.9

 

Form (appearance): Viscous liquid; crystalline or waxy solid

M.P.: 68-70.6℃

V.P.: 0.024 mPa (25℃)

F.P.:165℃ (Tag open cup); 151℃ (pensky Martens closed cup)

S.G.:1.210 (25℃)

Solubility.: In water <1μg/l. Soluble in acetone, chloroform, dichloromethane, diethyl ether, and toluene. Slightly soluble in heptane and methanol

Stability: Stable for 2 y at 25℃ and 50℃ (tech.). In natural daylight, DT₅₀ 255 d; stable 21 d at pH 5-9 (21℃)

Henry: 1.02×10² Pa m³ mol-1 (calc.)

K_owlogP: >6

 

Formulation types: EC;GR;SC;UL;WP

Mode of action: Contact and stomach action

Uses: Effective against a broad range of foliar pests, including Coleoptera, 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 a.i./ha against Aphididae in cereals to 45 g/ha against Aphididae and Lepidoptera in top fruit

Compatibility: Not compatible with alkaline materials

 

Reviews: FAO/WHO 65, 67 (see part 2 of the Bibliography).

Oral: Acute oral LD₅₀ for rats 54.5 mg/kg.

Skin and eye: Acute percutaneous LD₅₀ for rabbits >2000 mg/kg. Non-irritant to skin; virtually nondrritating to eyes (rabbits). No skin sensitization (guinea pigs).

Noel: (1 y) for dogs 1.5 mg/kg daily. Non-teratogenic in rats (≤2 mg/kg daily) and rabbits (8 mg/kg daily).

ADI: (JMPR) 0.02 mg/kg [1992].

Toxicity: WHO (a.i.) Ⅱ; EPA (formulation) II

 

Birds: Acute oral LD₅₀ for bobwhite quail 1800, mallard ducks 2150 mg/kg. Dietary LC₅₀ (8 d) for bobwhite quail 4450, mallard ducks 1280 mg/kg diet.

Fish: LC₅₀ (96 h) for bluegill sunfish 0.00035, rainbow trout 0.00015 mg/l.

Daphnia: LC₅₀ (48 h) 0.00016 mg/l. Low solubility in water and high affinity for soil contribute to produce little impact in aquatic systems under field conditions.

Worms: /Bees: LD₅₀ (oral) 0.1 μg/bee; (contact) 0.01462 ,μg/bee.

 

Soil/Environment: Soil DT₅₀ 65-125 d. K_oc 1.31-3.02 × 10^-5.