With a wide range of industrial gas solutions, Messer is committed to meeting all of our customers' gas-related needs.
CO2
Most carbon dioxide is dissolved in the water of oceans and rivers in the form of CO2, hydrogen carbonate or carbonation. Only about two percent of the Earth’s supply is in the atmosphere, where the share of CO2 is about 0.04 percent by volume.
- 78.5 °C (transitions directly from the solid to the gaseous state at standard atmospheric pressure)
-56.57 -56.57 °C at 5.18 bar
Colorless and odorless, nonflammable, inert but easily soluble in water.
With basic metal oxides or hydroxides, it forms carbonates and hydrogen carbonates.
Với oxit hoặc hiđroxit kim loại bazơ tạo thành muối cacbonat và hiđro cacbonat.
Primarily as a byproduct of biochemical or chemical processes. It is generated in a variety of processes, including ammonia synthesis, ethylene oxide production, hydrogen reforming, and in other industrial processes such as alcohol fermentation (in ethanol fuel production operations or breweries). Natural CO2 sources exist primarily in regions with volcanic origins.
Carbon dioxide is especially well-known as an additive in soft drinks. But it’s also used in drinking water treatment, wastewater neutralization, and greenhouse fertilization. In its solid form as dry ice, it serves as a coolant, a cleaning agent, and a means of refrigeration — for example, in food service or transport. Additionally, it plays a role in fire suppression systems.
Carbon dioxide is a media star — no other gas receives as much attention in the press. However, its fame comes largely from its reputation as a villain, since the public mostly associates it with being a “greenhouse gas.” Yet many of its beneficial properties are rarely mentioned. For example, the fact that plants cannot grow without CO₂ — making it an essential prerequisite for all higher forms of life — is often overlooked.
Along with water, plants are primarily made up of carbon compounds. The carbon they need to form roots, stems, leaves, and fruits comes from the CO₂ in the air. In turn, plants form the nutritional foundation of the entire animal kingdom — including humans.
Over hundreds of millions of years, that biomass also gave rise to vast reserves of coal, crude oil, and natural gas — resources that humans are now burning at an accelerating rate, releasing more and more CO₂ into the atmosphere. This is why atmospheric carbon dioxide levels are rising — and why its heat-trapping effect is contributing to global warming.
In technical usage, some of those CO2 exhaust gases are recovered and put to good use. The best-known application is the enrichment of soft drinks that owe their carbonic acid effervescence to the gas.
As dry ice, it is used for cooling and freezing. In drinking water treatment and wastewater neutralization, it plays an increasingly important and environmentally friendly role. Unlike the strong acids used in other methods, it leaves no harmful residues behind.
Using it in greenhouses helps convert carbon dioxide back into biomass, as plants absorb carbon for growth and release oxygen in return.
Do you have questions regarding Messer products, services and technology applications?
We are always ready to support
English 
Thai 
Korean 
Japanese 
Chinese