PROBLEM TO BE SOLVED: To provide a powdery composition containing a coated agrochemical in which powdery agrochemical is coated with a thermosetting resin, having 10 to 200 &mum volume median diameter and having good flowability as a granular powdery material.SOLUTION: This powdery composition consisting substantially of the coated agrochemical in which powdery agrochemical is coated with the thermosetting resin, having 10 to 200 &mum volume median diameter and an amorphous synthetic silica fine powder having &le0.6 g/mL apparent specific gravity is provided by having (100:0.1) to (100:30) range weight ratio of the coated agrochemical to the amorphous synthetic silica fine powder. Preferably, the thermosetting resin is a urethane resin and/or urea resin and the apparent specific gravity of the amorphous synthetic silica is in 0.01 to 0.3 g/mL range.COPYRIGHT: (C)2008,JPO&INPIT【課題】粉状農薬が熱硬化性樹脂で被覆されてなる体積中位径が10~200μmの被覆農薬を含む、粉粒体としての流動性が良好である粉状組成物を提供すること。【解決手段】粉状農薬が熱硬化性樹脂で被覆されてなる体積中位径が10~200μmの範囲である被覆農薬、及び、見掛け比重が0.6g/ml以下の非晶質合成シリカ微粉から実質的になり、該被覆農薬と該非晶質合成シリカ微粉との重量比が100:0.1~100:30の範囲である粉状組成物であって、好ましくは熱硬化性樹脂がウレタン樹脂及び/又は尿素樹脂であり、非晶質合成シリカ微粉の見掛け比重が0.01~0.3g/mlの範囲である粉状組成物。【選択図】なし
