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随着农业生产的不断发展,单位而积产量的不断提高,农药用量也不断增加,目前已出现污染环境、害虫抗药性等问题.因此,亟须研制高效、低毒、低残留的新农药.据报导,拟除虫菊酯等杀虫剂,比较能够符合上述要求.有关这方面适于农业治虫的新品种,不断涌现,受到国内外的重视.最近由法国鲁瑟-尤克拉夫公司生产的溴氰苯醚菊酯(简称溴氰菊酯),就是近几年发展起来的一种拟除虫菊酯杀虫剂.其化学名称为α-氰基-苯氧基苯基(1 R、3 R)-3-(2,2-二溴乙烯基)-2,2-二甲基环丙烷羧酸酯,分子式为C_(22)H_(19)Br_2NO_3.纯品为白色无味结晶粉末.熔点:98-101℃,蒸汽压:1.5×1O~(-8)mmHg(25℃),20±2℃下,水中的溶解度小于0.002ppm.不同程度地溶解于丙酮、苯、二甲苯、乙醇、醋酸乙酯、二噁烷、环已酮等溶剂中,对光以及
With the continuous development of agricultural production, the continuous improvement of unit output and the increase of the amount of pesticide, problems such as environmental pollution and pest resistance have emerged so that it is urgent to develop new pesticides with high efficiency, low toxicity and low residue. It has been reported that pyrethroids and other pesticides are more able to meet the above requirements.For this new varieties suitable for agricultural pest control, emerging, has been the focus of attention at home and abroad.Recently by the French Roose-Yukover company bromine Tetramethrin (abbreviated as deltamethrin) is a pyrethroid insecticide developed in recent years, and its chemical name is α-cyano-phenoxyphenyl (1 R, 3 R) 3- (2,2-dibromo-vinyl) -2,2-dimethylcyclopropanecarboxylate with the molecular formula of C 22 H 19 Br 2 NO 3 Pure white tasteless crystalline powder Melting point 98 -101 ℃, vapor pressure: 1.5 × 10 ~ (-8) mmHg (25 ℃), the solubility in water is less than 0.002ppm at 20 ± 2 ℃ .And dissolve to different extent in acetone, benzene, xylene, ethanol, Esters, dioxane, cyclohexanone and other solvents, as well as light