To provide a medicament which self-diffuses over the entire water surface in a short time by dripping on the water surface in a water environment even if there is no movement of water flow, water flow and water, Furthermore, we are offering a self-water surface diffusion type labor saving agent which is not classified as a conventional drug type which can save labor for drug spraying work on water environment and uniform diffusion.SOLUTION: In order to solve the above-mentioned problems, the present invention is a method for producing a chemical composition comprising at least a liquid component, a particle or a powder chemical component, and a chemical component which is dissolved or adsorbed or adhered to the chemical component or covers the chemical component, , And the flowable mixture is uniformly dissolved in water having a temperature range of greater than 0 C. and less than 40 C. by a weight of 20 times , And is not suspended or emulsified, which is a self-water surface diffusion type labor saving agent.(FIG.【課題】水流、水流及び水の移動がなくても或いは少なくても、水環境の水面に滴下することで、水面全面に短時間で自己拡散する薬剤であって、ジャンボ剤及びサーフ剤よりもさらに水環境への薬剤散布作業の省力化、均一拡散化を図ることができる、従来の薬剤型に分類されない、自己水面拡散型省力化薬剤を提供する。【解決手段】本発明は、上記課題を解決するため、少なくとも、液状、粒又は粉状の薬品成分と、前記薬品成分に溶解又は吸着し、或いは前記薬品成分を被覆し、水面で前記薬品成分を拡散させる液状の拡散作用成分を含んでなる流動性の混合物で、かつ、前記流動性の混合物が２０倍の重量の、０℃より高く４０℃より低い温度範囲の水中に一様に、溶解、懸濁又は乳化しないことを特徴とする自己水面拡散型省力化薬剤の構成とした。【選択図】図１
