Hyoketsu Kakumei has the capability constantly to keep the coolness for long hours at the prescribed range of temperature. In the Japanese market, the refrigerant for the temperature range of minus 18 degree is used for mail-order business of the sale of ice creams and it is also introduced by major delivery companies for the transport of items needed to be kept refrigerated. As it enables the constant keeping of coolness at minus 18 degree, it has widely been introduced as the replacement of dry ice, and also adopted as a refrigerant for liquor of the Japan Airlines, and it is superior in performance in that it can repeatedly be frozen. While the use of dry ice generates carbon dioxide, Hyoketsu Kakumei does not, and further because the ingredients of the refrigerant consist only of good additives with unique technology, it is safe even if it is broken and stuck to human body. As it is commercialized in plural temperature ranges such as minus 10 degree, minus 18 degree and minus 20 degree, the desirable temperature can be maintained. As the refrigerant for minus 18 degree enables the freezing in a freezer at minus 20 degree, it is also a major sale point that there is no need of procuring special freezing warehouses.