What is a dry ice and what is made of?

Dry ice is Carbon Dioxide in a solid form, cold dense with white vapor; approximately 50% CO2-snow and 50% cold CO2-gas. It sublimates at -78.5 °C, at Earth's atmospheric pressures. It is used primarily as a cooling agent. Its advantages consist of lower temperature than that of water ice and not leaving any residue.

Applications

Blast Cleaning (Dry Ice Pellets)

• Dry ice blasting is accelerated in a pressurized Airstream and directed at a surface to clean it. The method is similar to other forms of abrasive blasting such as sand blasting, plastic bead blasting, or soda blasting. It leaves no chemical residue as dry ice sublimates at room temperature. It is commonly used by oil and gas, petrochemical, food, paper, automotive, printing, manufacturing, and marine industries. It removes contaminants such as oil, grease, adhesives, ink, dirt, dust, rust, carbon, pulp, and paint.

Medical / Pharmaceutical Application

• Used in the transportation of temperature–sensitive biomedical or biological samples and pharmacological products.
• Used for cooling while transporting organs donated, medical samples, and blood without any distraction or losing the quality of samples.

Industrial Application

• Used to prevent chemical reactions and allow safe storage in the shipping of sensitive or volatile products, also neutralize alkalis and create a cold trap that gives very low-temperature surfaces on which molecules can be able to condense.
• Used for cooling metals or bearings, shafts, and collars to be fitted together that require interference to fit while it’s cold.
• Used to freeze pipes to stop the flow of water and to cut or repair without any obstruction of work.