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Common NameSilafluofen
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中文通用名氟硅菊酯
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IUPAC(4-ethoxyphenyl)[3-(4-fluoro-3-phenoxyphenyl)propyl](dimethyl)silane
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CAS(4-ethoxyphenyl)[3-(4-fluoro-3-phenoxyphenyl)propyl]dimethylsilane
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CAS No.105024-66-6
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Molecular FormulaC25H29FO2Si
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Molecular Structure
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Category
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ActivityInsecticide
Silafluofen is primarily active following ingestion, the product also has some contact activity. It is applied to soil for use as a termiticide and to foliage and soil (in granular formulations) for use as an insecticide. Silafluofen has no knock-down activity and is thus suitable for the control of termites, ants and wasps by baiting. For control of termites, silafluofen forms a long-term barrier.
AgrEvo reported that silafluofen has comparable activity to all commercially available classes of insecticides. The company recommends its use in IPM programmes. -
CropUseCropUses:
rice, fruits, tea, turf, timber, forestry
Rice
50-300 g ai/ha
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FormulationDP = Dustable powder
GR = Granule
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Physical PropertiesMolecular weight:408.6; Physical form:Liquid. Density:1.08 (20 °C); Flash point:>100 °C (closed cup); Vapour pressure:2.5 × 10-3 mPa (20 °C) (vapour pressure balance); Henry constant:1.02 Pa m3 mol-1 ( calc., 20 °C); Partition coefficient(n-octanol and water):logP = 8.2; Solubility:In water 0.001 mg/l (20 °C). Soluble in most organic solvents.; Stability:Stable over a period of 2 years, when stored in original unopened containers at 20 °C.; At 20°C liquid, practically colorless and odorless. Soluble in most organic solvents.
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ToxicologyOral:Acute oral LD50 for male and female rats >5000 mg/kg. Percutaneous:Acute percutaneous LD50 for male and female rats >5000 mg/kg. Inhalation: LC50 (4 h) for rats >6.61 mg/l air. ADI:Not necessary; non-food uses only.
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Environmental ProfileEcotoxicology:?
Bees:Oral LD50(24 h) 0.5mg/bee (lab. test).Birds:Acute LD50 for Japanese quail and mallard ducks >2000 mg/kg.Daphnia: LC50 (3 h) 7.7 mg/l; (24 h) 1.7 mg/l (both Japanese guidelines).Fish: LC50 (96 h) for carp and rainbow trout >1000 mg/l.Worms: LD50 for earthworms >1000 mg/kg.?
Mallard duck
LD50 >2,000 mg/kg
Quail
LD50 >2,000 mg/kg
Carp [96 hrs]
LC50 >1,000 mg/litre
Daphnia [3 hrs]
LC50 >10 mg/litre
Fate in soil:
Method of degradation, half-life in soilFate in aquatic systems:
Method of degradation, half-life -
Transport InformationHazard Class:O (Obsolete as pesticide, not classified)
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