PROBLEM TO BE SOLVED: To provide a technique to inhibit the crystal deposition of a halogenated isoquinoline derivative-containing aqueous composition during low-temperature storage.SOLUTION: The present invention provides an aqueous composition comprising a compound represented by the general formula (1) [where X represents a halogen atom] or a salt thereof or a solvate thereof, and a cellulose ether derivative.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】ハロゲン化イソキノリン誘導体含有水性組成物の、低温保存時の結晶析出を抑制する技術の提供。【解決手段】次の一般式(1)[式中、Xはハロゲン原子を示す。]で表される化合物若しくはその塩又はそれらの溶媒和物、及びセルロースエーテル誘導体を含有する、水性組成物。【選択図】なし
