Beta-cyfluthrin

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Beta-cyfluthrin

中文通用名

高效氟氯氰菊酯

IUPAC

(RS)-a-cyano-4-fluoro-3-phenoxybenzyl (1RS,3RS;1RS,3SR)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate

CAS

cyano(4-fluoro-3-phenoxyphenyl)methyl 3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylate

CAS No.

68359-37-5

Molecular Formula

C₂₂H₁₈Cl₂FNO₃

Molecular Structure

General Product Information

Category

Insecticides > Pyrethroid insecticides

Activity

Beta-cyfluthrin is an insecticide, acting as a contact and stomach poison. It combines a rapid knock-down effect with long lasting efficacy. It is not systemic in plants. It is used in agriculture, horticulture (field and protected crops) and viticulture. It is also used against migratory locusts and grassoppers and in public health and hygiene

CropUse

Corn/Maize, Cotton, Wheat, Cereals, Soybean, Vegetables

Pest Spectrum

indoor and outdoor pests including roaches, silverfish, fleas, spiders, ants, crickets, houseflies, ticks, black carpet beetles, small flying moths, saw-toothed grain beetles, rice weevils, pillbugs, mosquitoes, wasps, hornets, yellow jackets, gnats, earwigs and more.

Formulation

AE = Aerosol dispenser
CS = Capsule suspension
GR = Granule
SC = Suspension concentrate (=flowable concentrate)
WP = Wettable powder

Premix

Clothianidin+beta-cyfluthrin
Beta-cyfluthrin+Chlorpyrifos

Physical & Safety Data

Physical Properties

Molecular weight:434.3; Physical form:Colourless crystals; ( is a white powder with slight characteristic smell). Density:1.34 g/cm3 (22 °C); Composition:Comprises a mixture of four diastereoisomeric pairs of enantiomers: I (R)-a-cyano-4-fluoro-3-phenoxybenzyl (1R)-cis-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate + (S)-a, (1S Melting point:(II) 81 °C; (IV) 106 °C; Vapour pressure:(II) 1.4 ×10-5 ; (IV) 8.5 × 10-5 (both 20 °C); Henry constant:(II) 2.9 × 10-3; (IV) 3.1 ×10-2 (both in Pa m3 mol-1, 20 °C); Partition coefficient(n-octanol and water):(II) logP = 5.94; (IV) logP = 5.91; Solubility:In water: (II) 2.1, (IV) 1.2 (both in mg/l, 20 °C). In dichloromethane and toluene, both pairs >200 g/l (20 °C). (II) In hexane 2-5, isopropanol 5-10 (both in g/l, 20 °C). (IV) in hexane 1-2, isopropanol 2-5 (both in g/l, 20 °C).; Stability:Thermally stable at room temperature. Hydrolysis 50 (22 °C) for (II): 117 d ( 4), 20 d ( 7), 6 d ( 9); for (IV): 25 d ( 4), 11 d ( ;

Toxicology

Oral:Acute oral 50 for rats c. 500 / (in polyethyleneglycol), c. 270 / (xylene), c. 15 / Percutaneous:Acute percutaneous 50 (24 h) for rats >5000 /kg. No irritation to skin and slight primary irritation to the eye (rabbits).

Environmental Profile

Ecotoxicology:
Birds:Acute oral 50 for Japanese quail >2000 /.Daphnia:50 (48 h) 0.00029-0.0018 /l.Fish:50 (96 h) for golden orfe 330.9, rainbow trout 89, bluegill sunfish 28 /l.

Environmental fate:
Animals:Beta-cyfluthrin was largely and very quickly eliminated; 98% was eliminated after 48 h via the urine and the faeces.Soil:Degradation in different soils is rapid. Leaching behaviour can be classified as immobile. The metabolites of beta-cyfluthrin are readily accessible to further microbial degradation to the point of mineralisation to CO₂ in the soil.Plant:Since beta-cyfluthrin is not systemic, it penetrates only slightly into the plant tissues and is hardly translocated into other plant parts. The concentration is very low and can be neglected.

Transport Information

Hazard Class:Ib(Highly hazardous)