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Chemical Identification
Common Name
Lactofen
中文通用名
乳氟禾草灵
IUPAC
ethyl O-[5-(2-chloro-α,α,α-trifluoro-p-tolyloxy)-2-nitrobenzoyl]-DL-lactate
CAS
2-ethoxy-1-methyl-2-oxoethyl 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate
CAS No.
77501-63-4
Molecular Formula
C19H15ClF3NO7
Molecular Structure
Physical Properties
Molecular weight:461.8g/mol; Physical form:Dark brown to tan. Density:1.391 (25℃); Composition:Tech. is 74-79%. Melting point:44-46℃; Flash point:93 ℃; Vapour pressure:9.3 × 10-3 mPa (20 ℃); Henry constant:4.56 × 10-3 Pa m3 mol-1 (20℃, calc.); Solubility:In water <1 mg/l (20℃).; Stability:No decomposition at ambient temperatures for 6 months.
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/ kg. Percutaneous:Acute percutaneous LD50 for rats 2000 mg/kg. Formulation severely irritating to eyes. Inhalation: LC50 (4 h) for rats >5.3 mg/l. ADI:( JMPR) 0.4 mg/ kg b.w. [1998].
Environmental Profile
Ecotoxicology:
Bees: LD50 >160 μg/bee.Birds: LD50 for quail >2510 mg/kg. LC50 for ducks and quail >5620 ppm.Daphnia: LD50 >100 ppb.Fish: LC50 (96 h) for bluegill sunfish and rainbow trout >100 ppb.
Environmental fate:
Soil:Microbially degraded, DT50 3-7 d. Koc 10 000.
Transport Information
Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)

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