Carbon dioxide, a carbon and oxygen compound with the chemical formula of CO2 and the chemical formula of 44.0095, is a colorless, tasteless [2] or odorless and slightly sour gas in its aqueous solution at room temperature and pressure. It is also a common greenhouse gas and one of the components of air (accounting for 0.03%-0.04% of the total volume of the atmosphere).
High purity carbon dioxide is mainly used in electronic industry, medical research and clinical diagnosis, carbon dioxide laser, the calibration of detection instruments and the preparation of other special mixtures, in polyethylene polymerization reaction is used as a regulator.
Solid carbon dioxide is widely used to refrigerate dairy products, meat, frozen foods and other perishable foods in transit, and as a refrigerant in many industrial processes.
Tips til gassikkerhed:
High concentration of carbon dioxide itself has stimulation and anesthetic effect and can make the body hypoxia asphyxia.
In case of carbon dioxide poisoning, the victim should be removed from the environment of high concentration of carbon dioxide and taken to fresh air. The collar of the victim should be loosened, and artificial respiration should be used to make the victim inhale oxygen as soon as possible. If necessary, hyperbaric oxygen treatment should be used.
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Gaseous carbon dioxide is used for carbonization of soft drinks, pH control of water treatment process, chemical processing, food preservation, inert protection of chemical and food processing process, welding gas, plant growth stimulant, used for hardening molds and cores in casting and for pneumatic devices,
It is also used as a diluent for bactericidal gas (i.e., mixing gas of ethylene oxide and carbon dioxide as a bactericidal, insecticide and fumigant, widely used in sterilization, bone meal disinfection of medical instruments, packaging materials, clothes, fur, bedding, warehouses, factories, cultural relics and books).
Liquid carbon dioxide is used as a refrigerant, cryogenic testing of aircraft, missiles and electronic components, to enhance oil well recovery, rubber polishing and control chemical reactions, and as an extinguisher.
Supercritical carbon dioxide can be used as a solvent to dissolve non-polar, non-ionic and low molecular weight compounds, so it is widely used in homogeneous reaction.
