This application enables data on many gas molecules to be accessed rapidly.
GENERALITIES: 2 gas has a slightly irritating odor, is colorless and heavier than air. It cannot sustain life. It freezes at -78.5 °C to form carbon dioxide snow. In an aqueous solution it forms carbonic acid, which is too unstable to be easily isolated.
Carbon dioxide:
Carbon dioxide is used for inerting, chemical synthesis, supercritical fluid extraction (SFE), acidification (pH) of wastewater or product transportation at low temperature (-78 °C or -108 °F).
CO2 is used in the food business in these main areas:
2 .
Carbon Dioxide is typically used for environment protection: 2 is used for red fume suppression during scrap and carbon charging, for nitrogen pick-up reduction during EAF tapping and for bottom stirring. 2 can be used in recycling of waters from Acid Mine Drainage (AMD).2 lasers are feed with some special grades of carbon dioxide (§ LASAL™).
Carbon dioxide is usually used in waste water treatment, as a cooling medium in environmental testing of electronic devices. 2 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.
Molecular Weight
Molecular weight : 44.01 g/mol Solid phase
Latent heat of fusion (1,013 bar, at triple point) : 196.104 kJ/kg Solid density : 1562 kg/m3 Liquid phase
Liquid density (at -20 °C (or -4 °F) and 19.7 bar) : 1032 kg/m3 Liquid/gas equivalent (1.013 bar and 15 °C (per kg of solid)) : 845 vol/vol Boiling point (Sublimation) : -78.5 °C Latent heat of vaporization (1.013 bar at boiling point) : 571.08 kJ/kg Vapor pressure (at 20 °C or 68 °F) : 58.5 bar Density & temperature calculation of the liquid phase
Given the pressure (in bar), this module calculates the temperature and the density of the liquid phase on the liquid-gas equilibrium curve
Enter the pressure in bar (between 7 and 26)
Critical point
Critical temperature : 31 °C Critical pressure : 73.825 bar Critical density : 464 kg/m3 Triple point
Triple point temperature : -56.6 °C Triple point pressure : 5.185 bar Gaseous phase
Gas density (1.013 bar at sublimation point) : 2.814 kg/m3 Gas density (1.013 bar and 15 °C (59 °F)) : 1.87 kg/m3 Compressibility Factor (Z) (1.013 bar and 15 °C (59 °F)) : 0.9942 Specific gravity (air = 1) (1.013 bar and 21 °C (70 °F)) : 1.521 Specific volume (1.013 bar and 21 °C (70 °F)) : 0.547 m3 /kg Heat capacity at constant pressure (Cp) (1.013 bar and 25 °C (77 °F)) : 0.037 kJ/(mol.K) Heat capacity at constant volume (Cv) (1.013 bar and 25 °C (77 °F)) : 0.028 kJ/(mol.K) Ratio of specific heats (Gamma:Cp/Cv) (1.013 bar and 25 °C (77 °F)) : 1.293759 Viscosity (1.013 bar and 0 °C (32 °F)) : 0.0001372 Poise Thermal conductivity (1.013 bar and 0 °C (32 °F)) : 14.65 mW/(m.K) Miscellaneous
Solubility in water (1.013 bar and 0 °C (32 °F)) : 1.7163 vol/vol Concentration in air : 0.03 vol % Go back to choosing the units
The vapor pressure curve may be obtained by clicking on the image. On the graph, pressure is in bar or 0.1 MPa, temperature in K or °C. The critical point is indicated by a black spot on the liquid-vapor equilibrium curve.
Liquid to gas conversion
This module enables a volume (measured at 1 atmosphere and boiling point) or a mass of liquid gas to be converted into a volume or a mass of gas measured at 1 atmosphere and 15 °C.
Data : liquid Phase3 ) or mass
Gas to liquid conversion
This module enables a volume (measured at 1 atmosphere and 15 °C) or a mass of gas in gaseous phase to be converted into a mass or a volume of liquid (measured at 1 atmosphere and boiling point).
Data : Gas Phase3 ) or mass
Go back to choosing the units
The European Material Safety Data Sheets (MSDS) are made available for information only. Visitors to this site may only use them at their own risk. The MSDSs were prepared by EIGA ( the European Industrial Gas Association) according to European Union standards. Although Air Liquide believes the information in the MSDSs to be correct, Air Liquide cannot be held responsible in any event if the contents do not meet the regulatory requirements of countries outside the European Union. Material Safety Data Sheets are subject to revision. Refer to this web site to ensure that you have the latest version.
Major hazard : High Pressure and Inhalation Toxicity (Am. Conf. Of Gov. Ind. Hygienists ACGIH 2000 Edition) : 5000 ppm Flammability limits in air (STP conditions) : Non-flammable Odour : None UN Number : UN1013 (gas); UN2187 (liquid refrigerated); UN1845 (solid) EINECS Number : 204-696-9 DOT Label (USA) : NFG DOT Hazard class (USA) : Non flammable Gas Air Liquide has assembled data on the compatibility of gases with materials to assist you in evaluating which products to use for a gas system. Although the information has been compiled from what Air Liquide believes are reliable sources (International Standards: Compatibility of cylinder and valve materials with gas content; Part 1: ISO 11114-1 (Jul 1998), Part 2: ISO 11114-2 (Mar 2001)), it must be used with extreme caution. No raw data such as this can cover all conditions of concentration, temperature, humidity, impurities and aeration. It is therefore recommended that this table is used to choose possible materials and then more extensive investigation and testing is carried out under the specific conditions of use. The collected data mainly concern high pressure applications at ambiant temperature and the safety aspect of material compatibity rather than the quality aspect.
Material
Compatibility
Metals
Stainless Steel
Satisfactory
Plastics
Polyamide (PA) (NYLON™ )
Satisfactory
Polypropylene (PP)
Satisfactory
Elastomers
Chlorofluorocarbons (FKM) (VITON™ )
Non recommended, significant swelling and significant loss of mass by extraction or chemical reaction.
Lubricants
You can choose the units in which the values are displayed. By default, SI units are selected.
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