Abstract
Kearns, Ingle and Metcalf1 have recently commented on the properties of a chlorinated hydrocarbon of empirical formula C10H6C18 which was described as “possibly a mixture of isomers which as yet have not been resolved and evaluated individually”. In a note2 on this new insecticide it has been stated that in solubility the compound, to which the trade name ‘Velsicol 1068’ has been assigned, resembles D.D.T. and benzenehexachloride. It seems desirable to direct attention to the fact that unlike the two latter compounds, we have confirmed the observation of Kearns and co-workers1 that the new compound is soluble in all proportions in most organic solvents, including deodorized kerosene. This property is of considerable importance in formulating products for test purposes. It appears that apart from the results of Kearns and co-workers1 little has been published on the insecticidal efficacy of 1068, but these workers presented results to support their statement that “(1068) was found to be more toxic than D.D.T. and to compare favourably in toxicity to the pure Î isomer of benzenehexachloride”3.
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Kearns, C. W., Ingle, L., and Metcalf, R. L., J. Econ. Ent., 38, 661 (1945).
Nature, 158, 701 (1946).
Taylor, E. L., Nature, 155, 85 (1945).
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WEST, T. ‘Velsicol 1068’. Nature 158, 951 (1946). https://doi.org/10.1038/158951b0
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DOI: https://doi.org/10.1038/158951b0
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