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这两种菊酯是最近发展的拟除虫菊酯杀虫剂中较好的品种。一、杀灭菊酯又称速灭杀丁、苏米赛定、速灭菊酯。英文名称Sumicidin(该品种系日本住友化学公司Sumitomo Chem.Co.首先开发,所以有这名称)、Fenvalerate。化学名称α-氰基-3-苯氧基苄基(R,S)-2-(4-氯苯基)-3-甲基丁酸酯。分子式C_(25)H_(22)ClNO_3,分子量491.9。杀灭菊酯为无色至黄色油状液体,能溶于多种有机溶剂,几乎不溶于水,挥发性差,在酸性中稳定,耐热性好,对光也稳定,遇碱分解失效。本剂对人、畜毒性较低,20％乳油对大白鼠(雄)急性口服致死中量(LD_(50))为310毫克/公斤,经皮LD_(50)>5,000
These two pyrethroids are the better varieties of the recently developed pyrethroid insecticides. First, kill the pyrethrins, also known as speed kill Ding, Sumidi set, monetiforms. English name Sumicidin (the variety is Sumitomo Chem.Co., first developed by Sumitomo Chemical Co., Japan, so there is this name), Fenvalerate. Chemical Name α-Cyano-3-phenoxybenzyl (R, S) -2- (4-chlorophenyl) -3-methylbutyrate. Molecular formula C_ (25) H_ (22) ClNO_3, molecular weight 491.9. Fenfestase is colorless to yellow oily liquid, soluble in a variety of organic solvents, almost insoluble in water, volatile, stable in acid, heat resistance, light stability, met alkali decomposition failure. The agent has low toxicity to humans and animals. The acute oral instillation (20 mg / kg) of 20% EC on rats (male) was 310 mg / kg and LD 50 (50)> 5,000