Insecticidal action of some esters of halogenated fatty acids in the vapor phase

✍ Scribed by R.C. Roark; R.T. Cotton

• Publisher: Elsevier Science
• Year: 1928
• Tongue: English
• Weight: 50 KB
• Volume: 206
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(28)90911-4

✦ Synopsis

THE action of the esters of some of the halogenated fatty acids in the vapor phase upon insects was tested. From the standpoints of toxicity to insects, availability, cost, and freedom from fire hazard, methyl, isopropyl, and ethyl monochloroacetates appear to be the most promising of the lower alkyl esters of chloroformic (chlorocarbonic), monochloro-, dichloro-, and trichloroacetic, monobromoacetic, alpha-bromo-and beta-bromopropionic and beta-chloropropionic acids tested. Dosages of I pound of methyl monochloroacetate, 1.5 pounds of isopropyl monochloroacetate, and 2 pounds of ethyl monochloroacetate per I,OOO cubic feet were effective against stored-product insects in fumigation vaults of the commercial type. As further tests, however, showed that the monochloroacetates injure the germination of wheat, these fumigants do not look promising for the fumigation of grain intended for seed.