Illustrate execution form offers the composition which includes chlorine dioxide which are made to melt in acetic acid. When being retained, as for density of chlorine dioxide in the composition, vis-a-vis the early density of chlorine dioxide in the said composition, for example, 28 days it is kept at least with 30% or more. As for illustrate execution form, it is possible to offer the method of having the step which makes chlorine dioxide discharge from the composition which includes chlorine dioxide which are made to melt in acetic acid.< Selective figure >Figure 2例示的実施形態は、酢酸に溶解させた二酸化塩素を含む組成物を提供する。保存された時には、組成物中の二酸化塩素の濃度は、該組成物中の二酸化塩素の初期濃度に対して、例えば、30%以上で少なくとも28日間保持される。例示的実施形態は、酢酸に溶解させた二酸化塩素を含む組成物から二酸化塩素を放出させるステップを具える方法を提供することができる。【選択図】図2
