Chemical Identification
Common Name
Benfuracarb
中文通用名
丙硫克百威
IUPAC
ethyl N-[2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl(methyl)aminothio]-N-isopropyl-b-alaninate
CAS
2,3-dihydro-2,2-dimethyl-7-benzofuranyl 2-methyl-4-(1-methylethyl)-7-oxo-8-oxa-3-thia-2,4-diazadecanoate; ethyl N-[[[[(2,3-dihydro-2,2-dimethyl-7-benzofuranyl)oxy]carbonyl]methylamino]thio]-N-(1-methylethyl)-b-alaninate
CAS No.
82560-54-1
Molecular Formula
C20H30N2O5S
Molecular Structure
Physical Properties
Molecular weight:410.5; Physical form:Viscous reddish-brown liquid. Density:1.1493 (20 °C); Flash point:114 °C (closed cup); Vapour pressure:<1 ?/SYM> 10-2 (20°C, gas saturation method); Partition coefficient(n-octanol and water):logP = 4.22 (25 °C); Solubility:In water 7.74 /l ( 6.5, 20 °C). In benzene, dichloromethane, ethanol, acetone, hexane, xylene and ethyl acetate >1000 g/l (20 °C).; Stability:Stable in neutral and weakly basic media, but unstable in acidic and strongly basic media. Decomposes at 227 °C.;
Toxicology
Oral:Acute oral 50 for male rats 222.6, female rats 205.4, mice 175, dogs 300 /. Percutaneous:Acute percutaneous 50 for rats >2000 /kg. Non-irritant to skin, slightly irritant to eyes (rabbits). Non-sensitising to skin (guinea pigs). Inhalation:50 (4 h) for rats 0.34 /l air.
Environmental Profile
Ecotoxicology: 
Bees:50 (topical) 0.29 mg/g.Birds:Acute oral 50 for hens 92 /.Daphnia:50 (3 h) >10 /l.Fish:50 (48 h) for carp 0.65 /l. 

Environmental fate:
 Animals:In rats, benfuracarb is metabolised rapidly and almost completely excreted in the urine and faeces within 7 days. Major metabolites in the faeces are carbofuran, carbofuran phenol, 3-hydroxycarbofuran, 3-hydroxyphenol, and 3-ketophenol. Urinary metaboliteSoil:50 in soil is c. 4-28 h. Under upland conditions, benfuracarb is decomposed to carbofuran, while under flooded conditions, carbofuran phenol is also found as a major degradation product.Plant:In plants, N-S bond cleavage occurs as the initial step, giving rise to carbofuran, which is subsequently metabolised to 3-hydroxycarbofuran. The principal hydrolytic products are carbofuran phenol and 3-hydroxy- and 3-ketophenol, all present in
Transport Information
Signal Word:CAUTION; 
Hazard Class:III(Slightly hazardous)

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