DDT as a Marine Antifouling Agent

Abstract
Paint containing 20% DDT by wt. and applied to a boat accumulated no barnacles after about 2V2 mos. of use in sea water. DDT, either alone or mixed 20% by wt. in paint, and applied to an iron-bound keg which floated in sea water for 3 mos., had little inhibitory effect on marine algae or other organisms which foul ship bottoms. DDT did not wash away in sea water over a 4-month period and retained its effectiveness as a component of paint. It did not affect the drying properties or durability of the paint.

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