What is dry ice? How to use

Dry ice is a solid state of carbon dioxide. Due to its very low temperature, which is -78.5 degrees Celsius, it is often used to maintain objects in a frozen or low-temperature state. Dry ice can rapidly freeze objects and lower temperatures, and has been widely used. When dry ice dissolves, it does not transform from solid to liquid, but directly sublimates from solid to gas. Therefore, its melting does not produce any water or liquid, which is why we call it "dry ice". Generally speaking, a complete piece of dry ice will consume a lot due to sublimation within 24 hours. And the losses caused by these sublimations are also ubiquitous. Therefore, when purchasing dry ice before use, try to shorten the time interval between purchasing dry ice and actually using it; In addition, dry ice cut into small pieces is more prone to sublimation than a whole piece of dry ice. If not necessary, try not to cut dry ice into small or granular pieces. Do not expose dry ice in the refrigerator or freezer. Because if dry ice is placed directly in the refrigerator or cold storage without packaging, the temperature regulator of the refrigerator or cold storage will mistakenly think that the temperature is too low and be turned off, which will damage the lifespan of the refrigerator. Of course, if it is during a power outage, dry ice will keep the refrigerator or cold storage at a good low temperature.