Common name: transfluthrin
Chemical name:
(1R-trans)-(2,3,5,6-tetrafluorophenyl)methyl-3-(2,2-dichloroethenyl)-2,3-dimethylcyclopropanecarboxylate
Molecular formula: C15H12Cl2F4O2
Chemical class: pyrethroid insecticides
CAS no.: 118712-89-3
Properties:
Form: pale yellow crystals
Melting point: 32
oC
Vapour pressure: 4.0x10-1 mPa (20
oC)
Solubility in water: 5.7x10-5g/l (20
oC)
Solubility in solvents: In most organic solvents>200g/l
Stability: No decomposition after 5h at 200
oC, DT50 in pure water (25
oC)>1y(pH5), 14d (pH9)
Toxicity:
Acute oral LD50 for rats: >5,000mg/kg
Acute dermal LD50 for rats: >5,000mg/kg
Inhalation for rats LC50: 0.513mg/l
Mild irritation to eyes and skin
Ecotoxicology:
Effects on aquatic organisms: golden orfe 1.25μg/l, rainbow trout 0.7μg/l (96h), daphnia EC50 1.7μg /l(48h), algae EC50 >0.1mg/l(72h)
Effects on bees: high toxic to bees
Effects on birds: Virginian tree quail and canary birds LD50 >2,000mg/kg
Environmental fate:
In aquatic ecosystem, tetrafluorobenzyl alcohol and tetrafluorobenzoic acid are formed
Mode of action:
Effector on presynaptic voltage gate sodium channels in nerve membranes, causing
knockdown effect in insects. Insecticide active by inhalation and contact; also
repellent
Usage:
Control of a wide range of pests, fast-acting against mosquitoes, flies, cockroaches
and whitefly
