| 摘要 |
PROBLEM TO BE SOLVED: To provide a cold retaining tool comprising a novel cold retaining composition having inhibited cubical expansion upon coagulation.SOLUTION: A cold retaining tool comprises a cold retaining composition comprising potassium aluminum sulfate, salt other than potassium aluminum sulfate, and solvent. In the cold retaining composition, the ratio of the content of potassium aluminum sulfate to the content of salt other than potassium aluminum sulfate is 5.5-9.0 mass%. |
