Carbon dioxide is a colorless, odorless, tasteless and non-toxic gas. Melting point -56.6°C (0.52MPa), boiling point -78.6°C (sublimation), density 1.977g/L.
Carbon dioxide has a wide range of industrial uses.
Dry ice can be obtained by liquefying carbon dioxide into a colorless liquid under a certain pressure, and then rapidly solidifying under low pressure. Its temperature is minus 78.5 ℃. Because of its very low temperature, dry ice is often used to keep objects frozen or cryogenic.
Carbon dioxide is recovered from many different sources. It is obtained as an off-gas from fermentation processes, lime-stone kilns, natural CO2 springs, as well as gas streams from chemical and petrochemical operations. Recently, CO2 is also recaptured from the off-gas from power plants.
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Carbon dioxide is used extensively as a neutralizing agent for pH control，for example, in cement curing water treatment and in many other commercially important chemical applications.
Carbon dioxide is employed in medicine in mixtures with oxygen, for reanimating victims of asphyxiation (drowning, electrocution, carbon monoxide poisoning, diphtheritic toxin morphine, scopolamine). It also serves in the treatment of certain skin affections. Carbon dioxide is also used for blood analysis and dehydration of penicillin.
Carbon dioxide is used for the chemical vapour deposition of silicon dioxide.
A substantial volume of carbon dioxide is used for carbonating baverages such as beer and many soft drinks and conservation of wine, unfermented grape juice and various fruit juices.
Carbon dioxide is used to modify atmospheres, for example in green houses where it increases plant growth rates or combined with nitrogen to prolong quality in food packaging applications(MAP).
Carbon dioxide is used as an inerting agent for various mild steel welding operations, often in combination with argon.
Solid carbon dioxide(Dry Ice) is used as blasting agent and refrigerant. Solid carbon dioxide is used for cooling gas chromatography ovens.
Liquid carbon dioxide is becoming increasingly used as a refrigerant in mechanical refrigerating systems due to its environmental credentials.
Carbon dioxide is used in mixtures for car emission monitoring and environmental monitoring. Carbon dioxide is used for fire extinguishing.
Cylinder: 40L Valve: G5/8 CGA580 Content: 18Kg
Cylinder: 440L Valve: DISS716 Content: 250Kg
The molecular mass of carbon dioxide is 44.01amu.
High-purity carbon dioxide is mainly used in the electronics industry, medical research and clinical diagnosis; gaseous carbon dioxide is used for carbonated beverage addition, pH control, chemical processing, welding gas; solid carbon dioxide (dry ice) is widely used in food refrigeration, etc.
Yes. Greenhouse gases refer to some gases in the atmosphere that absorb solar radiation reflected from the ground and re-emit the radiation, such as water vapor, carbon dioxide, most refrigerants, etc. They warm the earth's surface and heat the air in the greenhouse.
There are many sources of carbon dioxide emissions, including: ① combustion of fossil fuels (coal, oil, natural gas); ② production and processing of coal and oil; ③ animal respiration and feces; ④ plant respiration and humic acid fermentation; ⑤ Fermentation and decay of organic matter (animals, plants); ⑥ Volcanic eruptions, forest fires, etc.
All organic matter, including animals and plants, can be released during the process of decomposition, fermentation, decay, and metamorphism, and CO2 is also released during the combustion of petroleum, paraffin, coal, and natural gas.
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