How does the process of CO2 freezing work and what are its applications in various industries?

The process of CO2 freezing, also known as carbon dioxide freezing, involves cooling carbon dioxide gas to a temperature below -78.5 degrees Celsius, at which point it solidifies into dry ice. This solid form of CO2 is commonly used in various industries for applications such as food preservation, medical storage, and cleaning processes. In food preservation, dry ice can help maintain low temperatures during transportation and storage. In the medical field, it is used for preserving biological samples and vaccines. Additionally, dry ice is utilized in cleaning processes as it sublimates, turning directly from a solid to a gas, leaving no residue behind.