Cypermethrin
CAS NO.: 52315-07-8
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.
Function
Thechemical for farming use is highly toxic to fish, bees and aquatic insects in accordance with the National Pesticides Telecommunications Network (NPTN). It is found in many household ant and cockroach killers, including Raid and ant chalk.
| Crop | Pests | Rate of Use | Application |
| Brassicaceous vegetable | cabbage caterpillar | 37.5-56.5 g/ha. | Spray |
| Apple trees | peach fruit borer | 56.25-75 g/ha. | |
| Cotton | cotton bollworm | 62.5-125 mg/kg |
Note
1. 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 this insecticide. Resistance to the product has developed quickly in insects exposed frequently and can render it ineffective.
2. Excessive exposure can cause nausea, headache, muscle weakness, salivation, seizures, and shortness of breath. In humans, this insecticide is deactivated by enzymatic hydrolysis to several carboxylic acid metabolites, which are eliminated in the urine. Worker exposure to the agricultural chemical can be monitored by measurement of the urinary metabolites, while severe overdosage may be confirmed by quantitation of cypermethrin in blood or plasma.
3. A recent study at Xuzhou Medical College in China showed that, in male rats, the product 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 the product can induce impairments of the structure of seminiferous tubules and spermatogenesis in male rats at high doses.
Technical Data of Cypermethrin 100g/L EC| Items | Specification | Method |
| Appearance | Blue transparent liquid | N/A |
| Purity, g/L | 100.0 ±5.0 | GC |
| Acidity (calculated as H2SO4, g/L) | ≤1.5 | CIPAC MT 75.3 |
| Water, % | ≤0.5 | Karl Fischer |
| Dilution Stability (20 times) | 0.5h Paste of no more than 1 ml, without free oil | CIPAC MT 36.1 |
| 2h Paste of no more than 2ml, without free oil | ||
| 24h emulsification again can achieve complete emulsion system. | ||
| 24.5h Paste of no more than 2ml, without free oil | ||
| Storage Stability at 0℃ | Comply with above | CIPAC MT 39.1 |
| Storage Stability at 54℃ | Comply with above | CIPAC MT 46.3 |
