Chemical name: (RS)-α-cyano-4-fluoro-3-phenoxybenzyl(1RS,3RS;1RS,3SR)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate
CAS no.: 68359-37-5

Molecular formula: C₂₂H₁₈C_l2FNO₃
Physical & chemical property:
Beta-cyfluthrin is a mixture of four diastereoisomers and their ratio, expressed as a percentage of the sum of the four diastereoisomers, shall be:
diastereoisomer I (1R,3R,aR + 1S,3S,aS = 1:1; cis): maximum 2.0 %
diastereoisomer II (1R,3R,aS + 1S,3S,aR = 1:1; cis): 30.0 – 40.0 %
diastereoisomer III (1R,3S,aR + 1S,3R,aS = 1:1; trans): maximum 3.0 %
diastereoisomer IV (1R,3S,aS + 1S,3R,aR =1:1; trans): 57.0 – 67.0 %
Physical State: Colourless crystals; (technical is a white powder with slight characteristic smell)
Melting point: 81°C(II), 106°C(IV)
Density: 1.34g/cm3(22°C)
Solubility: In water: 2.1 (II), 1.2(IV) (both in μg/l 20°C). In dichloromethane and toluene, both pairs >200g/l (20°C).
Stability: Thermally stable at room temperature.
Specification: 95%TC, 2.5%EC
Uses: Insecticide effective against Lepidoptera, Coleoptera, Homoptera and Hemiptera on cotton, fruit and vegetables, cereals and other crops, at 7.5-20g/ha. Also against migratory locusts and grasshoppers; and in animal health.