思思精品视频,亚洲欧美精品久久,国产第一页在线播放,欧美日韩国产va另类,一区二区三区四区精品,在线观看国产日韩,中文字幕视频一区

Products

Cypermethrin

Generic name: Cypermethrin
Standard: Technical
Chemical name:
丁硫克百威

Molecular formula: C22H19CL2NO3
Molecular weight: 416.32
CAS RN: 52315-07-8
Physical and chemical properties:
Assay: 95%
Appearance: Brown to dark red viscous semi-solid, viscous liquid at 60°C
Melting point: 60-80°C
Flashing point: 80°C
Relative density (water=1): 1.1
Vapour pressure: At 20°C is 2.3×107Pa
Volatility: Stable to light. Slowly lose weight when temperature> 220°C. Stable in weak acid, decomposed with alkali. Hydrolysis half-life period is 1 day.
Solubility: Soluble in most organic solvents like alcohols, chlorinated hydrocarbons, cyclohexane, benzene. Solubility> 450g/L in dimethylbenzene. Hardly soluble in water.
Hazard: Decomposed to cyanide gas when heated above 220°C.
Acute toxicity: Medium toxicity. Rat per os LD50:251mg/kg. percutaneous dose of LD50: 1600 mg/kg with no death, inhalation LC50> 0.048mg/L.
Chronic toxicity: No effect dose on rat is 5mg/kg/day.
Irritation: Minor skin irritation, medium eye irritation
Application: Cypermethrin technic has stomach toxicity and tag out effect with broad spectrum, high speed and light and heat stability. It has killing effect on eggs of some pests and anti-feeding activity to some pests. It is suitable for the pest with organic rganophosphorus pesticide resistance. It has good effect, long persistance and is safe to crop when used properly.
Packing: 200kg/drum