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二二三升华杀虫法是二二三烟剂杀虫法的一种,既操作简单,用药成本低廉,但一般书籍上记载均不详,故将我们试用此法时所获得的点滴经验介绍如下。1.二二三的性质:各个书籍上的记载均不一致,如:军委卫生部出版的药剂学校教科书“药物学”上记载二二三的熔点为105℃,在107℃时就分解成氯化氢气,其杀虫作用完全消失;而“消毒学讲义”上记载,精制品熔点为109℃,粗制品为89℃,在195℃时才能使其分解。据我们多次试验所见,加入氯化铵的粗制的二二三熔点为55℃,其沸点为165℃,在200℃时仍不消失其杀虫作用。
Two two three sublimation insecticidal law is a two two three insecticide a kind of tobacco, both simple operation, low cost of medication, but the book is generally unknown, so we try this method when the experience gained by bit as follows . 1. Two hundred twenty-three nature: the records are inconsistent on all books, such as: Pharmacy School of Pharmacy published pharmacy school textbooks “Pharmacology ” on twenty-three of the melting point of 105 ° C, at 107 ° C decomposition Hydrogen chloride gas, the insecticidal effect completely disappeared; and “disinfection”, the note, refined product melting point of 109 ° C, the crude product is 89 ° C, 195 ° C in order to make it decompose. According to our many experiments, we found that when the ammonium chloride was added, the melting point of the crude two two-three was 55 ° C and the boiling point was 165 ° C. The insecticidal effect was still not lost at 200 ° C.