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Chemical Identification
Common Name
Fluazuron
中文通用名
吡虫隆
IUPAC
1-[4-chloro-3-(3-chloro-5-trifluoromethyl-2-pyridyloxy)phenyl]-3-(2,6-difluorobenzoyl)urea
CAS
N-[[[4-chloro-3-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy]phenyl]amino]carbonyl]-2,6-difluorobenzamide
CAS No.
86811-58-7
Molecular Formula
C20H10Cl2F5N3O3
Molecular Structure
Category
Activity
Ixodicide
Premix
Flonicamid+Chlorfluazuron
Chlorfluazuron+beta-cypermethrin
Abamectin+Chlorfluazuron
Physical Properties
Molecular weight:506.2; Physical form:White to pink, odourless, fine crystalline powder. Density:1.59 (20 °C); Melting point:219 °C ( decomp.); Vapour pressure:1.2 ×10-7 mPa (20 °C); Henry constant:<3.04 × 10-6 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 5.1 ( rp-tlc method); Solubility:In water <0.02 ppm (20 °C). In methanol 2.4, isopropanol 0.9 (both in g/l, 20 °C).; Stability:Stable up to 219 °C. Hydrolysis DT50 (25 °C) 14 d ( pH 3), 7 d ( pH 5), 20 h ( pH 7), 0.5 h ( pH 9).;
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/ kg ( OECD 401). Percutaneous:Acute percutaneous LD50 for rats >2000 mg/ kg ( OECD 402). Inhalation: LC50 (4 h) for rats >5994 mg/m3 ( OECD 403).
Environmental Profile
Ecotoxicology: 
Algae: NOEC for freshwater green algae 27.9 mg/l (virtually non-toxic).Bees: OECD class "not toxic".Birds:Acute oral LD50 for bobwhite quail, mallard ducks >2000 mg/kg. LC50 (8 d) for bobwhite quail, mallard ducks >5200 ppm.Daphnia: LC50 0.0006 mg/l ( OECD class "very toxic").Fish: LC50 for rainbow trout >15, carp >9.1 mg/l ( OECD class "harmful").Worms: LC50 (14 d) for earthworms >1000 mg/ kg (not toxic) ( OECD 207). 

Environmental fate:
Animals:Virtually no metabolism.Soil:Not investigated; environmental contamination is unlikely because of pour-on application.Plant:Not relevant.
Transport Information
Hazard Class:III(Slightly hazardous)

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