Silafluofen

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Silafluofen

中文通用名

氟硅菊酯

IUPAC

(4-ethoxyphenyl)[3-(4-fluoro-3-phenoxyphenyl)propyl](dimethyl)silane

CAS

(4-ethoxyphenyl)[3-(4-fluoro-3-phenoxyphenyl)propyl]dimethylsilane

CAS No.

105024-66-6

Molecular Formula

C₂₅H₂₉FO₂Si

Molecular Structure

General Product Information

Category

Insecticides > Pyrethroid insecticides

Activity

Insecticide
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.

CropUse

CropUses:
rice, fruits, tea, turf, timber, forestry

Rice	50-300 g ai/ha

Formulation

DP = Dustable powder
GR = Granule

Physical & Safety Data

Physical Properties

Molecular 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.

Toxicology

Oral: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.

Environmental Profile

Ecotoxicology:?
Bees:Oral LD₅₀(24 h) 0.5 mg/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.?