The colorless, odorless gas with a slightly acidic taste that is heavier than air and constitutes 3% of the air is identified as refrigerated liquid carbon dioxide (UN2187) in Class 2 materials classification. It is non-flammable, non-toxic, and recognized for its properties as described.

From a geometric perspective, liquid carbon dioxide tanks come in cylindrical and spherical shapes. And in terms of storage method, they are categorized into fixed and transport types. Fixed tanks are classified into two types: aboveground and underground. Transport tanks, according to design and construction standards, are categorized into Cargo tanks, Fixed tanks, and ISO tanks.

Carbon dioxide is widely used in the food industry. Carbon dioxide is used in the beverage industry to carbonate non-alcoholic beverages. Liquid carbon dioxide is widely used for freezing meat, poultry, vegetables, and fruits. And also, in welding, it is used as a shielding gas and is cheaper than argon and helium. In the pharmaceutical industry, it is used to produce urea, carbonates, bicarbonates, and sodium silicate. This gas is injected into oil wells, where it can act as both a compressing agent and reduce the viscosity of the oil. This allows the oil to move more quickly into the earth and flow into extraction wells. Additionally, it is used for storing dry ice, which has various applications in many industries, including: Dry ice, encapsulated in fire extinguisher capsules, is used for fire suppression, as a mold and scale remover, to eliminate damages caused by termites, as a rodent exterminator, for freezing skin, weight loss, eliminating warts, cloud seeding, cleaning tankers, etc.