Dry ice is formed by compressing and cooling CO2 gas to a temperature of -78.5 °C (-109.3 °F). At this temperature, CO2 converts directly from gas to solid form without passing through a liquid state. The result is hard, dry blocks of ice with a characteristic white colour.
Properties of dry ice
Extremely low temperature: At -78.5 °C, it is one of the coldest naturally occurring substances on Earth.
Sublimation: Dry ice converts directly from solid to gaseous form at temperatures above -78.5 °C without leaving any liquid behind.
Applications of dry ice
The food industry: Used for cooling, freezing, and controlled atmosphere during transport and storage.
Medical research: Storage of biological samples at ultra-low temperatures and transport of tissue.
Cleaning: Dry ice blasting for cleaning and cooling of materials during production.
Transport: Cooling agent for transporting sensitive goods such as medicines and stem cells.
Entertainment: Creates fog and smoke effects in theatre, nightclubs, restaurants, and events.
