Fipronil is a kind of phenyl pyrazole type insecticide. Broad-spectrum of killing the harmful insects, has stomach poison,tag-out and certain systemic actions to the harmful insects. Its disinsection mechanism is to block insects' chloride metabolization which controlled by theγ-aminobutyric acid.So it has high disinsection activity,but harmless to crops.

Item	Parameter
State	when 23℃, it is white powder
Specific gravity	1.48～ 1.629(20℃)
Melting point	195.5～203℃
Vapor pressure	3.7? 0- 7Pa
Solubleness	water:1.9mg/L(pH7) acetone:54.6g/100mLmethylene chloride:2.23g/100mL	hexane： 0.003g/100mLmethanol： 13.75g/100mLtoluene： 0.3g/mL
Half-life	the half-life in the soil is 1～3 months，in water the half-life is 135 days. the photolyze half-life in the soil is 34 days, the water's is 8hrs.