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Common Name
Fluazolate
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IUPAC
isopropyl 5-[4-bromo-1-methyl-5-(trifluoromethyl)pyrazol-3-yl]-2-chloro-4-fluorobenzoate
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CAS
1-methylethyl 5-[4-bromo-1-methyl-5-(trifluoromethyl)-1H-pyrazol-3-yl]-2-chloro-4-fluorobenzoate
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CAS No.
174514-07-9
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Molecular Formula
C15H12BrClF4N2O2
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Molecular Structure
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Category
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Activity
Herbicide
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Physical Properties
Molecular weight:443.6; Physical form:Fluffy, white, crystalline solid. Melting point:79.5-80.5 °C; Vapour pressure:9.43 × 10-3 mPa (20 °C); Henry constant:7.89 × 10-2 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 5.44; Solubility:In water 53 mg/l (20 °C).; Stability:Stable at pH 4 and pH 5; DT50 4201 d ( pH 7, calc.), 48.8 d ( pH 9) (both 20 °C).;
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Toxicology
Oral:Acute oral LD50 for rats >5000 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats >5000 mg/kg. Slightly irritating to eyes; not irritating to skin (rabbits). Not a skin sensitiser (guinea pigs). Inhalation: LC50 for rats >1.7 mg/l.
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Environmental Profile
Ecotoxicology: Birds:Oral LD50 for bobwhite quail and mallard ducks >2130 mg/kg. Dietary < LC50 for bobwhite quail and mallard ducks >5330 < mg/ kg.Daphnia: EC50 (48 h) >0.039 mg/l.Fish: LC50 (96 h) for rainbow trout and bluegill sunfish >0.045 mg/l.Worms: LC50 (14 d) for earthworms >1170 mg/ kg dry soil. Environmental fate: Soil:Laboratory DT50 (3 field and 1 standard soil) 16-71 d. Strongly bound to soil: Kd and Koc in clay loam ( pH 5.1, o.c. 1.94%) 2.5
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Transport Information
Hazard Class:O (Obsolete as pesticide, not classified)