Several residues, formed by the spontaneous oxidation of a number of amine hydrosulfides, had been standing in open tubes for eight months. The residue from «-butylamine hydrosulfide was large in comparison with the others at hand. Recrystallization of this product from water yielded a white crystalline compound which began to sublime at 175°and melted with decomposition and charring at 180-193°.Analysis for nitrogen and titration with standard iodine gave the following results.
A blue oil, which probably contains the highly unsaturated hydrocarbon, azulene, Ci5Hi8. 10. Formic, acetic and caproic acids, the last in small proportion, which evidently were present to some extent in combination with the previously mentioned alcohols as esters.11. Ammonia. 12. Trimethylamine. The two last-mentioned basic substances were present in appreciable amounts in the distillate, but the ammonia largely predominated. Both ammonia and trimethylamine were also found to be emanations from the living plant.Although trimethylamine has been found by field tests to possess some attraction for the boll weevil, much more extended experiments have still to be undertaken by the entomologists in order to determine the practicability of its use as a bait.
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