Imidacloprid is a systemic insecticide which acts as an insect neurotoxin and belongs to a class of chemicals called the neonicotinoids which act on the central nervous system of insects, with much lower toxicity to mammals. The chemical works by interfering with the transmission of stimuli in the insect nervous system. Specifically, it causes a blockage of the nicotinergic neuronal pathway. By blocking nicotinic acetylcholine receptors, imidacloprid prevents acetylcholine from transmitting impulses between nerves, resulting in the insect's paralysis and eventual death. It is effective on contact and via stomach action. Because imidacloprid binds much more strongly to insect neuron receptors than to mammal neuron receptors, this insecticide is more toxic to insects than to mammals.

CAS：138261-41-3
中文别名：
英文别名：1-((6-chloropyridin-3-yl)methyl)-3-nitroimidazolidin-2-imine;
分子式：C9H10ClN5O2
分子量：255.661
精确质量：255.052
Psa：89.04
Logp：1.4778

UNII：3BN7M937V8

密度：1.59 g/cm3
沸点：442.3ºC at 760mmHg
熔点：144ºC
闪点：221.3ºC
折射率：1.713
稳定性：Stable at normal temperatures and pressures.
储存条件：0-6ºC
蒸汽压：5.47E-07mmHg at 25°C

RTECS号：NJ0560000
安全说明：S26; S36; S22
危险类别码：R11
危险品运输编码：UN 2588
海关编码：2933399026
危险类别：6.1(b)
包装等级：III
危险品标志：N; Xn; F

用途
吡虫啉是烟碱类超高效杀虫剂，具有广谱、高效、低毒、低残留，害虫不易产生抗性，对人、畜、植物和天敌安全等特点，并有触杀、胃毒和内吸等多重作用。害虫接触药剂后，中枢神经正常传导受阻，使其麻痹死亡。产品速效性好，药后1天即有较高的防效，残留期长达25天左右。药效和温度呈正相关，温度高，杀虫效果好。主要用于防治刺吸式口器害虫。