To provide a volatile body that prevents a liquid agent from being attached to a hand or the like, and an agent volatilizer.SOLUTION: A volatile body 4 has a longitudinal shape, and is used by being inserted into a container 3 that has an opening at its top and stores a liquid agent 2 inside. The volatile body has at least one groove 40 formed extending in longitudinal direction on its periphery, and is composed of a material for the liquid agent 2 to have a contact angle of 90° or less.SELECTED DRAWING: Figure 3【課題】手などに液状薬剤が付着し難い揮散体及び薬剤揮散器を提供する。【解決手段】揮散体４は、長手形状を呈しており、上部に開口を有しかつ内部に液状薬剤２を収容した容器３内に挿入されて使用されるものであって、外周に長手方向に延びるように形成された少なくとも１つの溝４０を備え、液状薬剤２の接触角が９０°以下の材料からなる。【選択図】図３
