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What is Carbon Dioxide?

Carbon Dioxide (CO2) is a nonflammable, colourless, odourless gas found in air at concentrations of about 0.03%. It may exist simultaneously as a solid, liquid, or gas.

Purchase High-quality Carbon Dioxide Gas Or Liquid Carbon Dioxide

DSW supplies compressed and liquid CO2 in a variety of grades tailored to specific applications, including:

  1. Breweries and wineries use beverage-grade CO2.
  2. CO2-based refrigerants help preserve food.
  3. Industries like concrete pulp and paper treat process water with CO2.
  4. Research and pharmaceutical labs use liquid CO2.
  5. CO2 injection aids in oil recovery.
  6. Dry ice (solid CO2 pellets) is used for cleaning and media blasting.
  7. CO2 serves as a stunning gas for livestock.
  8. It’s also used as a shielding gas in welding.

Industrial Applications


Our beverage-grade CO2 and reliable supply chain help customers maintain peak freshness in their products while avoiding contamination. We know purity matters when finishing bottled beverages, capping brewing, or wine production. Beverage-grade CO2 refers to carbon dioxide that meets specific purity standards for food and beverage applications. Unlike industrial-grade CO2, which may contain impurities unsuitable for consumption, beverage-grade CO2 undergoes rigorous purification processes to ensure it is free from contaminants and meets the quality standards required for use in bottling beverages, carbonating drinks, and other food applications.

Food Manufacturing

Liquid CO2 is used with our chilling and freezing systems to maintain product quality by preventing spoilage or ageing en route to your customers. We also offer a fast and easy way to clean equipment without leaving anything behind.

Carbon dioxide fire extinguisher

Carbon dioxide is heavier than air and does not support combustion. Therefore, many fire extinguishers use carbon dioxide to extinguish fires.
The carbon dioxide fire extinguisher uses liquefied carbon dioxide to extinguish the fire. In addition to the above characteristics, there is an advantage that the solid residue is not left after the fire is destroyed.

Fire Extinguisher

4. Carbon dioxide can also be used as a shielding gas for welding, which is not as protective as other rare gases (such as argon) but at a relatively low price.


5. Carbon dioxide lasers are an essential source of industrial lasers.
Carbon dioxide (CO2) lasers are gas lasers that operate using a mixture of carbon dioxide gas, nitrogen, and helium. They are widely used in industrial applications due to their versatility, high power output, and ability to operate in continuous wave (CW) or pulsed modes.

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6. Carbon dioxide can be used to make wine, and carbon dioxide gas creates an oxygen-deficient environment that helps prevent bacteria from growing in the grapes.

10l cylinder 99 9 99 999 industrial laughing gas n2o medical grade nitrous oxide 1

7. Carbon dioxide can control the pH value; carbon dioxide is added to the swimming pool to maintain the pH value, and carbon dioxide is added to keep the pH from rising.

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8. Carbon dioxide can be used in the alkali and sugar industries.

Carbon Dioxide

9. Carbon dioxide can be a blowing agent in the plastics industry.

  1. Foaming and Expansion: One primary function of CO2 as a blowing agent is to induce foaming and expansion in plastic materials. When CO2 is introduced into a polymer melt or solution, it dissolves into the polymer matrix under pressure. Upon depressurization or heating, the dissolved CO2 forms bubbles within the polymer, leading to foaming and expansion of the material. This process creates cellular structures within the plastic, resulting in materials with reduced density and improved insulation properties.
  2. Reduced Material Density: By incorporating CO2 into plastic formulations, manufacturers can significantly reduce material density without compromising mechanical strength or other essential properties. Foamed plastics produced using CO2-blowing agents are lighter, making them ideal for applications where weight reduction is desirable, such as automotive components, packaging materials, and insulation products.
  3. Improved Thermal and Acoustic Insulation: Foamed plastics produced using CO2-blowing agents exhibit enhanced thermal and acoustic insulation properties compared to solid plastics. The cellular structure created by introducing CO2 provides additional air pockets within the material, effectively reducing heat transfer and sound transmission. As a result, CO2-blown foams are widely used in construction materials, refrigeration insulation, and soundproofing applications.
  4. Environmental Benefits: CO2 blowing agents offer environmental advantages over traditional blowing agents such as hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs), which are known to have high global warming potentials (GWPs). CO2 is non-toxic, non-flammable, and readily available as a byproduct of various industrial processes, making it a more sustainable choice for foaming applications. Additionally, using CO2 in plastics helps reduce the carbon footprint of manufactured products by sequestering CO2 within the material.
  5. Processing Considerations: Incorporating CO2 as a blowing agent requires careful consideration of processing parameters such as temperature, pressure, and mixing conditions to ensure uniform dispersion and foaming of the plastic material. Specialized equipment, such as extruders with CO2 injection capabilities or physical foaming agents, may be employed to facilitate the foaming process efficiently.

Carbon Dioxide

10. Dry ice can be used for artificial rain, smoke effects on the stage, food industry, special effects of food, etc.

Carbon Dioxide

11. Dry ice can be used to clean up nuclear industry equipment and plate rolls in the printing industry.

Carbon Dioxide

12. Dry ice can be used in the automotive, marine, aerospace, space, and electronics industries. Liquid carbon dioxide is reduced to a gas volume by volume reduction and fabric separation, eliminating the complicated post-treatment process brought by conventional solvents.

13. CO2 supercritical extraction technology changes properties when temperatures exceed the critical temperature (Tc) of 31℃, and pressures surpass the necessary pressure (Pc) of 3 MPa. This process results in a density similar to liquid, a viscosity comparable to gas, and a diffusion coefficient 100 times higher than that of liquid. As a result, it possesses dissolving solid capabilities, enabling the extraction of various substances’ active ingredients. This technology allows for producing high-value products, facilitates the extraction of previously inaccessible substances, and offers cost-effective, non-toxic, safe, and efficient solutions. It finds applications in industries such as chemical, pharmaceutical, and food.

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