Carbon Dioxide
Carbon Dioxide (CO2) is a colorless, odorless,
non-flammable, slightly acidic, liquefied gas.
Applications
Chemical: Carbon dioxide is used in synthesis chemistry
and for controlling reactor temperatures.
CO2 is also employed to neutralize alkaline
effluents.
Carbon dioxide is used under supercritical conditions
for purifying or dying polymer, animal or vegetal fibers.
Pharmaceuticals: Carbon dioxide is used for inerting,
chemical synthesis, supercritical fluid extraction,
acidification (pH) of wastewater or product transportation
at low temperature (-78 ºC or -108 ºF).
Food and Beverage: CO2 is used in the food
business in these main areas:
• Carbonation of fizzing beverages such as soft
drinks, mineral water or beer,
• Packaging of foodstuffs, its inerting and bacteriostatic
properties being used successfully in nitrogen mixtures
(Modified Atmosphere Packaging or MAP), to increase
the shelf life of many food products .
• As cryogenic fluid in chilling or freezing operations
or as dry ice for temperature control during the distribution
of foodstuffs.
• Cafein is removal from cafee using supercritical
CO2.
Healthcare: CO2 produces close-to-physiologic
atmospheres for the operation of artificial organs.
Carbon dioxide is used as a component in a mixture of
oxygen or air as respiratory stimulant to promote deep
breathing. It is also used for the surgical dilation
by intra-abdominal insufflations.
Metal industry: Carbon Dioxide is typically used for
environment protection:
• CO2 is used for red fume suppression
during scrap and carbon charging, for nitrogen pick-up
reduction during EAF tapping and for bottom stirring.
• In the non ferrous metallurgy, carbon dioxide
is used for fume suppression during ladle transfer of
matte (Cu/Ni production) or bullion (Zn/Pb production).
• Small amount of liquid CO2 can be
used in recycling of waters from Acid Mine Drainage.
• The well known CO2 lasers are feed
with some special grades of carbon dioxide.
Laboratories and Analysis: Supercritical CO2
is the mobile phase in both chromatography and extraction
applications.
Pulp and paper: Carbon dioxide enables to sharply tune
the pH of recycled mechanical or chemical pulps after
an alkaline bleaching.
CO2 can be used in the Tall Oil neutralization
and for increasing the performance of paper machines.
Semiconductor applications: Carbon dioxide is usually
used in waste water treatment, as a cooling medium in
environmental testing of electronic devices.
Carbon dioxide can be used to add conductivity to ultrapure
water, for CO2 snow abrasive cleaning of
parts or residues on wafers. CO2 can also
be used as an environmentally friendly supercritical
fluid for removing photoresist from wafers, thus avoid
organic solvent use.
Environment: Injection of carbon dioxide allows to master
the pH of liquid effluents. CO2 is an excellent
alternative to sulfuric acid for pH balance control.
Other
industries: Carbon dioxide snow for fire extinguishers;
pH control and regulation of waste waters, swimming
pools,...
Molecular Weight
44.01
Specific Gravity (Air=1)
1.522
Specific Volume
0.5456m3/kg@21.1ºC, 101.325kPa
MSDS Reference
MSDS
Odor
None
CAS Registry No.
124-38-9
Specs Sheet
Carbon
Dioxide 5N
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