PROBLEM TO BE SOLVED: To provide a chemical volatilization unit which can prevent chemical sucked up by a volatilization body from contaminating an outer wall of a container.SOLUTION: A chemical volatilization unit comprises a container with an opening at its top, a chemical stored in the container and a stick-type volatilization body. The volatilization body is inserted into the container with a portion thereof projecting externaly from the container so that it sucks up and volatilizes then distributes the chemical in the outside air. The container has a rim part surrounding and defining the opening. The rim part consists of a first inner surface facing the opening and a second inner surface also facing the opening. The second inner surface is located more inside than the first inner surface in radial direction of the opening and located lower than the first inner surface. The first inner surface and the second inner surfaces are connected in a not-smooth manner so that the volatilization body, inserted into the container, is in contact with the second inner surface while keeping a distance from the first inner surface.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】揮散体に吸い上げられた薬液が容器の外壁面を汚すことを防止することができる薬液揮散器を提供する。【解決手段】上部に開口を有する容器と、前記容器内に収容される薬液と、棒状の揮散体とを備える薬液揮散器が提供される。前記揮散体は、前記薬液を前記容器内から吸い上げ、外部空間に揮散させるべく、前記容器外へ一部が露出するように前記開口を介して前記容器内に挿入される。前記容器は、前記開口を囲んで前記開口を画定する周縁部を含む。前記周縁部は、前記開口に面する第１内面と、前記開口に面する第２内面とを有する。前記第２内面は、前記第１内面よりも前記開口の径方向内側に位置するとともに、前記第１内面よりも下方に位置する。前記第１内面と前記第２内面とは、滑らかに連続しておらず、前記容器内に挿入された前記揮散体は、前記第１内面と距離を保ちつつ、前記第２内面と接触する。【選択図】図４
