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How to make dry ice at home

The method of making dry ice at home is as follows:

The simple method is to put a canvas bag over the mouth of the liquid carbon dioxide container, then open the container to release the carbon dioxide, so that it can be collected in the bag Some dry ice. Generally, you need to buy a dry ice machine.

Dry ice is solid carbon dioxide. It is obtained by liquefying carbon dioxide into a colorless liquid under a pressure of 6250.5498kPa, and then solidifying rapidly at low temperatures. Now dry ice has been widely used in many fields.

The history of dry ice can be traced back to 1823, when Faraday and Deeby in England liquefied carbon dioxide for the first time. Later, in 1834, Chirolet in Germany successfully produced solid carbon dioxide. However, it was limited to research use at that time and was not widely used.

Carbon dioxide is invisible. In fact, it is not (carbon dioxide) smoke, but (water) mist. When carbon dioxide changes from solid to gas, it absorbs a lot of heat, causing the temperature of the surrounding air to drop very quickly. As the air temperature drops, its solubility in water vapor becomes smaller. When water vapor liquefies, it releases heat and turns into small droplets, which is fog.

The successful industrial mass production of dry ice was the establishment of Dry Ice Co., Ltd. in the United States in 1925. At that time, the finished product was named dry ice, but its official name is solid carbon dioxide. In 1928, Japan obtained the manufacturing and sales rights from Dry Ice Co., Ltd. and established Nippon Dry Ice Co., Ltd., the predecessor of Showa Carbonated Co., Ltd.