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Beta-Cyfluthrin Supplier
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CAS No. 68359-37-5 |
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Product Name Beta-Cyfluthrin
CAS No. 68359-37-5
Categories Insecticides
Chemical Structure
NOMENCLATURE
Common name: beta-cyfluthrin; beta-cyfluthrine; cyfluthrin-beta
PHYSICAL CHEMISTRY
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)-cis-;
II (S)- a, (1R)-cis- + (R)- a, (1S)-cis-;
III (R)- a, (1R)-trans- + (S)- a, (1S)-trans-;
IV (S)- a, (1R)-trans- + (R)- a, (1S)-trans-.
Tech. grade contains: <2% diastereoisomer I, 30-40% diastereoisomer II, <3% diastereoisomer III, and 53-67% diastereoisomer IV.
Mol. wt.: 434.3;
M.f.: C22H18Cl2FNO3;
Form: Colourless crystals; (tech. is a white powder with slight characteristic smell). M.p.: (II) 81C; (IV) 106C;
V.p.: (II) 1.4x10-5 ***; (IV) 8.5x10-5 *** (both 20C);
KOW: (II) logP = 5.94; (IV) logP = 5.91;
Henry: (II) 2.9x10-3; (IV) 3.1x10-2 (both in Pa m3 mol-1, 20C);
S.g./density: 1.34 g/cm3 (22C);
Solubility: In water: (II) 2.1, (IV) 1.2 (both in g/l, 20C). In dichloromethane and toluene, both pairs >200 g/l (20C). (II) In hexane 2-5, isopropanol 5-10 (both in g/l, 20C). (IV) in hexane 1-2, isopropanol 2-5 (both in g/l, 20C).
Stability: Thermally stable at room temperature. Hydrolysis DT50 (22C) for (II): 117 d (pH 4), 20 d (pH 7), 6 d (pH 9); for (IV): 25 d (pH 4), 11 d (pH 7), 5 d (pH 9).
APPLICATIONS
Mode of action: Non-systemic insecticide with contact and stomach action. Acts on the nervous system, with rapid knockdown and long residual activity.
Uses: Insecticide effective against Lepidoptera, Coleoptera, Hemiptera and Homoptera on cotton, fruit, vegetables, cereals and other crops, at 7.5-20 g/ha. Also against migratory locusts and grasshoppers; and in animal health.
Formulation types: EC; EW; GR; UL; SC.
MAMMALIAN TOXICOLOGY
Oral: Acute oral LD50 for rats c. 500 mg/kg (in polyethyleneglycol), c. 270 mg/kg (xylene), c. 15 mg/kg (cremophor/water); for mice c. 140 mg/kg.
Skin and e |
| Company: |
Shanghai Kima Chemical Co., Ltd
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| Contact: |
Ms. sandy grance |
| Address: |
Rm 2219, 22F, Zhongyi Mansion, No. 2, Lane 1040, Caoyang Road, Shanghai, China |
| Postcode: |
200063 |
| Tel: |
0086-21-52661975 |
| Fax: |
0086-21-52661949 |
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