Generic name: Cypermethrin
Standard: Technical
Chemical name:

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  

国产一级毛片国语视频|日本中文字幕二区区精品|国产精品一区二区 97|97人妻无码公开免费视频