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Chemical Identification
Common Name
Fenobucarb
中文通用名
仲丁威
IUPAC
(RS)-2-sec-butylphenyl methylcarbamate
CAS
2-(1-methylpropyl)phenyl methylcarbamate
CAS No.
3766-81-2
Molecular Formula
C12H17NO2
Molecular Structure
Category
Activity
Insecticide
Premix
Imidacloprid+fenobucarb
Deltamethrin+fenobucarb
Beta-cypermethrin+fenobucarb
Fenobucarb+phenthoate
Carbosulfan+Fenobucarb
Emulsifiable concentrate, dust, micro granules, ULV liquid. 
Premix Parters: amitrole diuron; diuron; diuron sodium chlorate sodium metaborate; diuron terbutryn; sodium chlorate sodium metaborate;
Physical Properties
Molecular weight:207.3; Physical form:Colourless solid; ( tech., colourless to yellow-brown liquid or solid). Density:1.035 at 30 °C; Composition:Tech. is >97%. Melting point:31-32 °C; ( tech., 26.5-31 °C); Flash point:142 °C (closed system); Vapour pressure:13 mPa (20 °C); Henry constant:6.4 × 10-3 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 2.79; Solubility:In water 420 mg/l (20 °C), 610 mg/l (30 °C). In acetone, benzene, chloroform, xylene, toluene >1 (all in kg/ kg, room temperature).; Stability:Stable under normal storage conditions. Stable to light. Hydrolysed by acids and alkalis; (20 °C) DT50 >28 d (buffer at pH 2), 16.9 d ( pH 9), 2.06 d ( pH 10).;
Toxicology
Oral:Acute oral LD50 for male rats 623, female rats 657 mg/ kg. Percutaneous:Acute percutaneous LD50 for rabbits 10 250 mg/ kg. Inhalation: LC50 (4 h) for rats >0.366 mg tech./l air. ADI:( JMPR) 0.005 mg/ kg b.w. [2000].
Environmental Profile
Ecotoxicology: 
Birds:Acute oral LD50 for mallard ducks 323 mg/kg. Dietary LC50 (5 d) for mallard ducks >5500, bobwhite quail 5417 mg/ kg diet.Daphnia: LC50 (3 h) 0.32 mg/l.Fish: LC50 (48 h) for carp 16 mg/l. 

Environmental fate: 
Animals:2-(2-Hydroxy-1-methylpropyl)-phenyl N-methylcarbamate is a metabolite. Metabolism of carbamate insecticides is reviewed (M. Cool & C. K. Jankowski in "Insecticides").Soil:Soil Kom 125 (Utsunomia soil, 5.2% o.m.), 661 (Niigata soil, 1.8% o.m.); DT50 6-30 d and 6-14 d under paddy and upland conditions, respectively.Plant:As for animals.
Transport Information
Signal Word:WARNING; Hazard Class:II(Moderately hazardous)

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