PROBLEM TO BE SOLVED: To provide a plastic container that is an alternative plastic container storing an aqueous solution containing edaravone, the plastic container showing sufficient stability.SOLUTION: The present invention provides a plastic container that stores an aqueous solution containing 3-methyl-1-phenyl-2-pyrazoline-5-one or its pharmacologically acceptable salt, the plastic container having a polypropylene layer as an outer layer, a polypropylene layer as an intermediate layer, and a cyclic polyolefin layer as an inner layer.SELECTED DRAWING: None【課題】エダラボンを含む水溶液を収容してなる代替的なプラスチック容器であって、十分な安定性を示すプラスチック容器を提供すること。【解決手段】３－メチル－１－フェニル－２－ピラゾリン－５－オンまたはその薬学的に許容され得る塩を含有する水溶液を収容してなる、外層にポリプロピレン層、中間層にポリプロピレン層、および内層に環状ポリオレフィン層を備えたプラスチック容器。【選択図】なし
