PROBLEM TO BE SOLVED: To provide a sterilizing agent which reliably exhibits effects of sterilization, deodorization, and the like, and to provide a container therefor.SOLUTION: Provided is a sterilizing agent 1 filled in a container 2, comprising a tablet 11 of chlorine dioxide, a gelatinous composition 12 generated by adding at least water to a gelatinizer to make the same gelatinous, and additional water 13. Thus, a pH adjusting agent is not necessary, providing convenience that the sterilizing agent can be used as is when its use is started. Furthermore, in terms of persistence of gas evolution, convenience in handling, and the like, the gelatinous composition 12, together with the presence of additional water 13, can provide good diffusion of a chlorine dioxide gas into air. As a result, a concentration of the chlorine dioxide gas diffusing into air from a product can be controlled in a prescribed range for an extended period to exhibit reliable effects of sterilization, deodorization, and the like.COPYRIGHT: (C)2015,JPO&INPIT【課題】確実に除菌、消臭等の効果を奏する除菌剤とその容器とを提供する。【解決手段】この容器2に充填した除菌剤1は、二酸化塩素の錠剤11と、ゲル化剤に少なくとも水を加えてゲル状としたゲル状組成物12と、さらなる水13とを構成成分に有するので、pH調整剤が不要であり、使用開始時にそのまま使用できて便利である。しかも、ガス発生の持続性や取扱い上の便宜等より、ゲル状組成物12としても、さらなる水13の存在により、発生した二酸化塩素ガスの空気中への拡散を良好にすることができる。その結果、製品から空気中に拡散する二酸化塩素ガスの濃度を、長時間にわたり所定範囲に収めて、確実な除菌、消臭等の効果を奏することができる。【選択図】図1