公开(公告)号：MY186494A

公开(公告)日：2021-07-22

申请号：MYPI2018700757

申请日：2016-09-14

Applicant: TOPPAN FORMS CO LTD

Inventor： AYA UCHINO ,  YASUHIRO TANAKA

IPC: C09K5/08 ,  C09K5/06 ,  F25D3/00

Abstract: A refrigerant pack includes a refrigerant composition containing water, inorganic salts, a thickener, and a pH indicator, in which the refrigerant composition contains, as the inorganic salts, acidic inorganic salts, which exhibit acidic propetties in an aqueous solution of the acidic inorganic salts, and a phosphate; in the refrigerant composition, a ratio of a total content of the acidic inorganic salts and the phosphate to a total content of the inorganic salts is 5% to 100% by mass; the refrigerant composition contains, as the acidic inorganic salts, dihydrogen phosphate and an inorganic salt other than the dihydrogen phosphate; a pKa of the pH indicator is 4.9 to 8.0; and a pH (?1) of the refrigerant composition obtained in a case where all the components contained in the composition other than the phosphate, the dihydrogen phosphate, and water are removed and the pKa satisfy a relationship represented by Expression (i). pKa of pH indicators ?pH (?1) ?pKa of pH indicator+ 1.8 ? (i)