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Cypermethrin 25%EC

Cypermethrin is a synthetic pyrethroid used as an insecticide in large-scale commercial agricultural applications as well as in consumer products for domestic purposes. It behaves as a fast-acting neurotoxin in insects.



Cypermethrin is highly toxic to fish, bees and aquatic insects, according to the National Pesticides Telecommunications Network (NPTN). It is found in many household ant and cockroach killers, including Raid and ant chalk .


Uses and Dosage:



Rate of use


Brassicaceous vegetable

cabbage caterpillar

37.5-56.5 g/ha.


Apple trees

peach fruit borer

56.25-75 g/ha.


cotton bollworm

62.5-125 mg/kg




       Cypermethrin is a broad-spectrum insecticide, which means it kills beneficial insects and animals as well as the targeted insects.Fish are particularly susceptible to cypermethrin.Resistance to cypermethrin has developed quickly in insects exposed frequently and can render it ineffective.

       Excessive exposure can cause nausea, headache, muscle weakness, salivation, shortness of breath and seizures. In humans, cypermethrin is deactivated by enzymatic hydrolysis to several carboxylic acid metabolites, which are eliminated in the urine. Worker exposure to the chemical can be monitored by measurement of the urinary metabolites, while severe overdosage may be confirmed by quantitation of cypermethrin in blood or plasma.

      A recent study at Xuzhou Medical College in China showed that, in male rats, cypermethrin can exhibit a toxic effect on the reproductive system. After 15 days of continual dosing, both androgen receptor levels and serum testosterone levels were significantly reduced. These data suggested that cypermethrin can induce impairments of the structure of seminiferous tubules and spermatogenesis in male rats at high doses.


Food and Agriculture Organization of the United Nations World Health Organization China Pesticide Information NetWork CropWorld Global China International Agrochemical & Crop Protection Exhibition AgroChemEx ACE