PROBLEM TO BE SOLVED: To provide a cold insulation tool provided with a new composition for cold insulation in which volume expansion upon solidification is suppressed, and capable of cold-insulating an object for a long time.SOLUTION: Provided is a cold insulation tool provided with a composition for cold insulation comprising an inorganic compound other than sodium chloride having an eutectic point of -20°C or lower and water, and in which the content of the inorganic compound is 0.3 to 7 mass%.COPYRIGHT: (C)2015,JPO&INPIT【課題】凝固時の体積膨張が抑制され、対象物を長時間保冷できる新規の保冷用組成物を備えた保冷具の提供。【解決手段】共晶点が-20℃以下である塩化ナトリウム以外の無機化合物、及び水を含有し、前記無機化合物の含有量が0.3~7質量%である保冷用組成物を備えたことを特徴とする保冷具。【選択図】なし
