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Relation of Crystal Size and Shape to Contact Toxicity of D.D.T. Suspensions

Abstract

IT is frequently found that in two-phase disperse insecticidal systems in which the toxic compound constitutes part or whole of the disperse phase, toxicity bears an inverse relation to the particle size of the disperse phase. Recent work here has shown, however, that in the case of aqueous suspensions of pure p,p'-D.D.T. [1-trichloro 2,2-bis(p-chlorophenyl) ethane], this relationship is reversed.

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MCINTOSH, A. Relation of Crystal Size and Shape to Contact Toxicity of D.D.T. Suspensions. Nature 158, 417 (1946). https://doi.org/10.1038/158417b0

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