Preservation methods of dry ice: storage in freezer, storage in thermos flask, storage in insulated box. How to use dry ice: clean and dry, use an incubator. Because the temperature of dry ice is extremely low, touching it directly with your hands will cause frostbite. Do not touch dry ice directly with your hands. Dry ice will remain cold for a period of time after use, so do not throw it away casually. When using dry ice, you should always pay attention to safety. If carbon dioxide gas leakage is found, stop using it immediately and ventilate it quickly. Carbon dioxide is a colorless, tasteless and odorless gas at room temperature. Formula weight 44.01, one of the carbon oxides, commonly known as carbonic acid gas, also known as carbonic anhydride or carbonic anhydride. Solid carbon dioxide, commonly known as dry ice, can absorb a large amount of heat when sublimating, so it is used as a refrigerant, such as artificial rainfall, and is often used to create smoke in stage performances.