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Chemical Identification
Common Name
Tralomethrin
中文通用名
四溴菊酯
IUPAC
(S)-α-cyano-3-phenoxybenzyl (1R,3S)-2,2-dimethyl-3-[(RS)-1,2,2,2-tetrabromoethyl]cyclopropanecarboxylateor(S)-α-cyano-3-phenoxybenzyl (1R)-cis-2,2-dimethyl-3-[(RS)-1,2,2,2-tetrabromoethyl]cyclopropanecarboxylate
CAS
(S)-cyano(3-phenoxyphenyl)methyl (1R,3S)-2,2-dimethyl-3-(1,2,2,2-tetrabromoethyl)cyclopropanecarboxylate
CAS No.
66841-25-6
Molecular Formula
C22H19Br4NO3
Molecular Structure
Category
Activity

CropUse
Tralomethrin was a broad-spectrum Type II systemic pyrethroid ester insecticide that was registered for use in a variety of residential and commercial settings, and on a small number of agricultural crops including broccoli, cauliflower, cotton, lettuce, peanuts, and sunflowers.
Disease Spectrum

Weed Spectrum

Pest Spectrum

Formulation
SC = Suspension concentrate (=flowable concentrate)
WP = Wettable powder
Premix

Physical Properties
Molecular weight:665.0; Physical form:Yellow to beige, resinous solid ( tech.). Density:1.70 (20 °C); Composition:Laboratory grade tralomethrin (>93% a.i.) is a 60:40 mixture of two active diastereoisomers. Melting point:138-148 °C; Flash point:26 °C; Vapour pressure:4.8 × 10-6 mPa (25 °C); Partition coefficient(n-octanol and water):logP = c. 5 (25 °C); Solubility:In water 80 µg/l. In acetone, dichloromethane, toluene, xylene >1000, dimethyl sulfoxide >500, ethanol >180 (all in g/l).; Stability:Stable for 6 months at 50 °C. Acidic media reduce hydrolysis and epimerisation.;
Toxicology
Oral:Acute oral LD50 for rats 99-3000 mg a.i./kg, depending on the carrier used; for dogs >500 mg (in capsules)/kg. Percutaneous:Acute percutaneous LD50 for rabbits >2000 mg/kg. Moderate skin irritant; mild eye irritant (rabbits). Inhalation:LC50 (4 h) for rats >0.40 mg/l air.
Environmental Profile
Ecotoxicology: 
Bees:Non-toxic to honeybees. LD50 (contact) 0.12 µg/bee. Low LC50 and LD50 values under laboratory conditions do not represent significant hazard to bees in normal fBirds:Acute oral LD50 for quail >2510 mg/kg. Dietary LC50 (8 d) for mallard ducks 7716, quail 4300 mg/kg diet.Daphnia: LC50 (48 h) 38 ng/l. Low LC50 and LD50 values under laboratory conditions do not represent significant hazard to aquatic fauna in normal field use.Fish: LC50 (96 h) for rainbow trout 0.0016, bluegill sunfish 0.0043 mg/l. 

Environmental fate: 
Animals:Tralomethrin is transformed into deltamethrin and further degraded.Soil:Strongly adsorbed in soil; DT50 64-84 d.Kd 197-8784; Koc 43 796-675 667; highly immobile in various soils (sandy to clay loam).Plant:Tralomethrin is transformed into deltamethrin.
Transport Information
Hazard Class:II(Moderately hazardous)

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