| 摘要 |
PROBLEM TO BE SOLVED: To provide a cold insulation tool provided with a composition for cold insulation including a thickener, and in which deterioration in viscosity with the lapse of time is suppressed.SOLUTION: Provided is a cold insulation tool provided with a composition for cold insulation comprising: water; a thickener; an inorganic salt not equivalent to an oxidation preventive; and an oxidizer, in which the pH of an intermediate composition obtained by removing the oxidation preventive from the composition for cold insulation is 5.0 to 8.8, in the oxidation preventive, the pH of its 1 mass% aqueous solution is 8 or higher, and the content of the oxidation preventive in the composition for cold insulation is 0.4 to 1.4 mass%. |
