PROBLEM TO BE SOLVED: To provide a volatilization container capable of simply performing the switching operation from a tightly closed state to a volatilizable state before use and of easily adjusting a volatilization amount.SOLUTION: A volatilization container comprises a container body 1 storing a volatile agent, an inside plug body 10 mounted and fixed to a mouth cylindrical part 2 of the container body 1 to tightly close the inside thereof, and an overlaying cap 20 having a volatilization path 24 and covering the whole mouth cylindrical part 2 of the container body 1 in such a state as screwed to the inside plug body 10. Besides, a weakened part 13 breakably connecting a topped slender cylindrical retention cap 14 to the lower end of the retention cap 14 is formed on a top surface 12 of the inside plug body 10. Thereby, the container is configured so that when rotating the overlaying cap 20, the retention cap 14 rotates together with the overlaying cap 20 and the weakened part 13 is broken.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】 使用前の密閉状態から揮散可能状態への操作が簡単に行え、また揮散量を容易に調整できる揮散容器を創出することを課題とする。【解決手段】 揮散剤が収納される容器本体1と、容器本体1の口筒部2に装着固定されて内部を密封する中栓体10と、揮散通路24を有すると共に中栓体10に螺着した状態で容器本体1の口筒部2の全体を覆うオーバーキャップ20とを有し、中栓体10の天面12に、有頂細長筒状の保持キャップ14と、保持キャップ14の下端とを破断可能に連結する弱化部13とを形成し、オーバーキャップ20を回転させたときに、保持キャップ14がオーバーキャップ20と一緒に回転して弱化部13の破断が行われる構成とする。【選択図】 図1