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Common NameFlufenoxuron
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中文通用名氟虫脲
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IUPAC1-[4-(2-chloro-α,α,α-trifluoro-p-tolyloxy)-2-fluorophenyl]-3-(2,6-difluorobenzoyl)urea
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CASN-[[[4-[2-chloro-4-(trifluoromethyl)phenoxy]-2-fluorophenyl]amino]carbonyl]-2,6-difluorobenzamide
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CAS No.101463-69-8
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Molecular FormulaC21H11ClF6N2O3
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Molecular Structure
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Category
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ActivityInsecticide/Acaricide/Miticide
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Physical PropertiesMolecular weight:488.8; Physical form:Tech. is a white, crystalline solid. Density:1.57 kg/l (20 °C) (typical value); Composition:Tech. grade is 98-100% pure. Melting point:169-172 °C ( decomp.); Flash point:Not autoflammable; no explosive properties; Vapour pressure:6.52 ×10-9 mPa (20 °C); Partition coefficient(n-octanol and water):logP = 4.0 ( pH 7); Solubility:In water 7 ×10-11 g/l ( pH 7, 15 °C), 4 μg/l (25 °C). In acetone 82, xylene 6, dichloromethane 24 (all in g/l, 25 °C).; Stability:Stable 190 °C; to natural sunlight; thin film on glass stable >100 h in simulated sunlight. DT50 11 d (ambient in water). On hydrolysis (25 °C), DT50 206 d ( pH 5)
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ToxicologyOral:Acute oral LD50 for rats >3000 mg tech./ kg. Percutaneous:Acute percutaneous LD50 for rats and mice >2000 mg/kg. Non-irritating to eyes and skin (rabbits). Inhalation: LC50 (4 h) for rats 5 mg/l air. Phytotoxicity:None recorded. ADI:0.011 mg/ kg b.w. (Bayer 1996).
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Environmental ProfileEcotoxicology:
Birds:Acute oral LD50 for bobwhite quail >2000 mg/ kg.Fish: LC50 (96 h) for rainbow trout >100 mg/l.Other beneficial spp.:Low hazard to predatory mites and other predatory and parasitic arthropods.
Environmental fate:
Soil:Strongly adsorbed in soil, DT50 42 d (clay loam). Use in orchards over 3 years at a dose of 97.5 g/ ha gave rise to low residues in soil which did not significantly affect soil organisms, including earthworms -
Transport InformationSignal Word:CAUTION; Hazard Class:III(Slightly hazardous)
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