Tralomethrin

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Chemical Identification | General Product Information | Physical & Safety Data

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

General Product Information

Category

Insecticides > Pyrethroid insecticides

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 & Safety Data

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.K_d 197-8784; K_oc 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)