This application enables data on many gas molecules to be accessed rapidly.
Molecular Weight
Molecular weight : 58.123 g/mol Solid phase
Latent heat of fusion (1,013 bar, at triple point) : 80.165 kJ/kg Liquid phase
Liquid density (1.013 bar at boiling point) : 601.4 kg/m3 Liquid/gas equivalent (1.013 bar and 15 °C (59 °F)) : 239 vol/vol Boiling point (1.013 bar) : -0.5 °C Latent heat of vaporization (1.013 bar at boiling point) : 385.6 kJ/kg Critical point
Critical temperature : 152 °C Critical pressure : 37.96 bar Gaseous phase
Gas density (1.013 bar at boiling point) : 2.7 kg/m3 Gas density (1.013 bar and 15 °C (59 °F)) : 2.52 kg/m3 Compressibility Factor (Z) (1.013 bar and 15 °C (59 °F)) : 0.9625 Specific gravity (air = 1) (1.013 bar and 21 °C (70 °F)) : 2.076 Specific volume (1.013 bar and 21 °C (70 °F)) : 0.4 m3 /kg Heat capacity at constant pressure (Cp) (1.013 bar and 25 °C (77 °F)) : 0.096 kJ/(mol.K) Heat capacity at constant volume (Cv) (1.013 bar and 15.6 °C (60 °F)) : 0.088 kJ/(mol.K) Viscosity (1.013 bar and 0 °C (32 °F)) : 0.0000682 Poise Thermal conductivity (1.013 bar and 0 °C (32 °F)) : 13.6 mW/(m.K) Miscellaneous
Solubility in water (1.013 bar and 20 °C (68 °F)) : 0.0325 vol/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 : Fire Toxicity (Am. Conf. Of Gov. Ind. Hygienists ACGIH 2000 Edition) : 800 ppm Flammability limits in air (STP conditions) : 1.5-8.5 vol% Odour : Faintly Disagreeable UN Number : UN1011 EINECS Number : 203-448-7 DOT Label (USA) : FG DOT Hazard class (USA) : 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
General Behavior : Risk of corrosion by gas contained impurities in presence of moisture.
Stainless Steel
Satisfactory
Plastics
Polyamide (PA) (NYLON™ )
Satisfactory
Polypropylene (PP)
Satisfactory
Elastomers
Nitrile rubber (NBR)
Satisfactory
Chloroprene (CR)
Satisfactory
Ethylene - Propylene (EPDM)
Non recommended, significant swelling and modification of the mechanical properties.
Lubricants
Hydrocarbon based lubricant
Non recommended, significant loss of mass by extraction or chemical reaction.
You can choose the units in which the values are displayed. By default, SI units are selected.
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