Cyhalothrin is an organic compound that is used as a pesticide. It is a pyrethroid, a class of man-made insecticides that mimic the structure and insecticidal properties of the naturally-occurring insecticide pyrethrum which comes from the flowers of chrysanthemums. Synthetic pyrethroids, like lambda-cyhalothrin, are often preferred as an active ingredient in insecticides because they remain effective for longer periods of time. It is a colorless solid, although samples can appear beige, with a mild odor. It has a low water solubility and is nonvolatile. It is used to control insects in cotton crops.

CAS：68085-85-8
中文别名：空手道;功夫菊酯;3-(2-氯-3,3,3-三氟丙烯基)-2,2-二甲基环丙烷羧酸α-氰基-3-苯氧苄基酯;alpha-氰基-3-苯氧基苄基-3-(2-氯-3,3,3-三氟-1-丙烯基)-2,2-二甲基环丙烷羧酸酯;三氟氯氰菊酯;
英文别名：(RS)-α-cyano-3-phenoxybenzyl (1RS,3RS)-3-[(Z)-2-chloro-3,3,3-trifluoropropenyl]-2,2-dimethylcyclopropanecarboxylate;(RS)-α-cyano-3-phenoxybenzyl (1RS)-cis-3-[(Z)-2-chloro-3,3,3-trifluoropropenyl]-2,2-dimethylcyclopropanecarboxylate;rac-(Ξ)-cyano(3-phenoxyphenyl)methyl (1R,3R)-3-[(1Z)-2-chloro-3,3,3-trifluoroprop-1-en-1-yl]-2,2-dimethylcyclopropane-1-carboxylate;Cyhalothrin;cyano(3-phenoxyphenyl)methyl (1R,3R)-rel-3-[(1Z)-2-chloro-3,3,3-trifluoro-1-propen-1-yl]-2,2-dimethylcyclopropanecarboxylate;
分子式：C23H19ClF3NO3
分子量：449.85
精确质量：449.101
Psa：59.32
Logp：6.54398

UNII：V0V73PEB8M

外观与性状：无色固体
密度：1.344g/cm3
沸点：498.9ºC at 760 mmHg
熔点：49.2ºC
闪点：2ºC
折射率：1.574
储存条件：库房通风低温干燥,与食品原料分开储运

安全说明：S26; S36/37
危险类别码：R11
危险品运输编码：UN 2902
海关编码：2926909010
危险类别：6.1(b)
包装等级：III
危险品标志：F; Xn

生产方法
先以二甲基戊烯酸甲酯为原料,与三氯三氟乙烷、过氧苯甲酸在催化剂存在下反应,反应产物与特丁醇钠在四氢呋喃溶剂中环合,再经皂化等处理得到1,2-二氯-3,3,3,3-三氟丙烯基-2,'2'-二甲基环丙羧酸。另在液碱、甲醇存在下,由间苯氧基苯甲醛与甲醛反应,得到间苯氧基苯甲醇,再与氰化钠溶液在酸性条件下反应制得α-氰基-间苯氧基苯甲醇。最后以氯化亚砜为氯化剂,使环丙羧酸形成环丙酰氯,然后在吡啶存在下,与α-氰基-间苯氧基苯甲醇制成氯氟氰菊酯。 对多种鳞翅目幼虫有很好的杀灭效果,亦可有效地防治某些地下害虫,并对某些成虫有拒避作用
用途
对多种鳞翅目幼虫有很好的杀灭效果,亦可有效地防治某些地下害虫,并对某些成虫有拒避作用