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Ethane
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Ethane
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C2H6
Ethane

Physical Properties

Under solid (grey), liquid (blue) and vapor states (white) along the equilibrium curves

  • General properties
  • Solid phase
  • Liquid Phase
  • Gas Phase
(P)
log(P)
Download
  • Molecular weight
    30.069
    g/mol
  • Content in air
    /

Critical Point

  • Temperature
    32.17
    °C
    89.906 °F 305.32 K
  • Pressure
    48.722
    bar
    4.8722E6 pa 706.6526 lbf/in2 48.0849 Atm 4872.2 Kpa 3.6545E4 mmHg
  • Density
    206.18
    kg/m³
    12.8714 lb/ft³

Triple Point

  • Temperature
    - 182.78
    °C
    - 297.004 °F 90.37 K
  • Pressure
    1.13E-5
    bar
    1.13 pa 1.6389E-4 lbf/in2 1.1152E-5 Atm 1.13E-3 Kpa 8.4757E-3 mmHg
Pressure 1.013 bar
  • Melting point
    - 183.3
    °C
    - 297.94 °F 89.85 K
  • Latent heat of fusion (at melting point)
    95.081
    kJ/kg
    40.9049 Btu/lb 22.7249 kcal/kg
  • Solid density
    /
Pressure 1.013 bar
  • Liquid density
    543.83
    kg/m³
    33.9501 lb/ft³
  • Boiling point
    - 88.58
    °C
    - 127.444 °F 184.57 K
  • Latent heat of vaporization (at boiling point)
    489.4
    kJ/kg
    210.5453 Btu/lb 116.9694 kcal/kg
Pressure1.013barTemperature
  • Compressibility factor Z
    9.9005E-1
    9.9156E-1
    9.924E-1
  • Cp/Cv ratio γ
    1.2093
    1.1998
    1.1939
  • Dynamic viscosity
    8.6129E-5
    Po
    8.6129 µPa.s 8.6129E-6 PA.S 5.7876E-6 lb/ft/s
    9.0594E-5
    Po
    9.0594 µPa.s 9.0594E-6 PA.S 6.0877E-6 lb/ft/s
    9.3541E-5
    Po
    9.3541 µPa.s 9.3541E-6 PA.S 6.2857E-6 lb/ft/s
  • Gas density at boiling point
    2.054
    kg/m³
    1.2823E-1 lb/ft³
    2.054
    kg/m³
    1.2823E-1 lb/ft³
    2.054
    kg/m³
    1.2823E-1 lb/ft³
  • Gas density
    1.3547
    kg/m³
    8.4571E-2 lb/ft³
    1.2822
    kg/m³
    8.0045E-2 lb/ft³
    1.2381
    kg/m³
    7.7292E-2 lb/ft³
  • Heat capacity at constant pressure Cp
    1.6635
    kJ/(kg.K)
    3.9759E-1 BTU/lb∙°F 1663.507 J/kg∙K 3.9759E-1 kcal/kg∙K
    1.7188
    kJ/(kg.K)
    4.1081E-1 BTU/lb∙°F 1718.813 J/kg∙K 4.1081E-1 kcal/kg∙K
    1.7572
    kJ/(kg.K)
    4.1997E-1 BTU/lb∙°F 1757.159 J/kg∙K 4.1997E-1 kcal/kg∙K
  • Heat capacity at constant volume Cv
    1.3756
    kJ/(kg.K)
    3.2878E-1 BTU/lb∙°F 1375.603 J/kg∙K 3.2878E-1 kcal/kg∙K
    1.4325
    kJ/(kg.K)
    3.4239E-1 BTU/lb∙°F 1432.538 J/kg∙K 3.4239E-1 kcal/kg∙K
    1.4718
    kJ/(kg.K)
    3.5177E-1 BTU/lb∙°F 1471.8 J/kg∙K 3.5177E-1 kcal/kg∙K
  • Liquid (at boiling point)/gas equivalent
    401.44
    mol/mol
    424.14
    mol/mol
    439.25
    mol/mol
  • Solubility in water
    /
    4.556E-5
    mol/mol
    3.401E-5
    mol/mol
  • Specific gravity
    1.05
    1.05
    1.05
  • Specific volume
    7.382E-1
    m³/kg
    11.8248 ft³/lb
    7.799E-1
    m³/kg
    12.4928 ft³/lb
    8.077E-1
    m³/kg
    12.9381 ft³/lb
  • Thermal conductivity
    17.961
    mW/m∙K
    1.0385E-2 Btu/ft/h/°F 1.5454E-1 cal/hour∙cm∙°C 4.2928E-5 cal/s∙cm∙°C 1.7961E-2 W/(m∙K)
    19.741
    mW/m∙K
    1.1414E-2 Btu/ft/h/°F 1.6986E-1 cal/hour∙cm∙°C 4.7182E-5 cal/s∙cm∙°C 1.9741E-2 W/(m∙K)
    20.984
    mW/m∙K
    1.2132E-2 Btu/ft/h/°F 1.8055E-1 cal/hour∙cm∙°C 5.0153E-5 cal/s∙cm∙°C 2.0984E-2 W/(m∙K)
  • Vapor pressure
    23.8803
    bar
    2.388E6 pa 346.3543 lbf/in2 23.568 Atm 2388.03 Kpa 1.7912E4 mmHg
    33.7746
    bar
    3.3775E6 pa 489.859 lbf/in2 33.3329 Atm 3377.46 Kpa 2.5333E4 mmHg
    41.8744
    bar
    4.1874E6 pa 607.3366 lbf/in2 41.3268 Atm 4187.44 Kpa 3.1408E4 mmHg
C2H6
Ethane

Liquid / Gas Volumes

Calculate a liquid or gas volume or a mass

Liquid Phase

At boiling point at 1.013 bar

m3(Volume)
kg(Mass)

Gas Phase

at 1.013 bar and boiling point

m3(Volume)
kg(Mass)
C2H6
Ethane

Applications

Examples of uses of this molecule in Industry and Healthcare

Chemicals

Ethane is used in the production of organic synthesis intermediates, e.g. ethylene chloride is produced from ethane by the chlorination process.

Chemicals
C2H6
Ethane

Safety

Information to safely use this molecule

  • Major hazards
  • Material compatibility
  • GHS02
    Flammable
  • GHS04
    Gas under pressure

Autoignition Temperature in Air at Patm and Flammability Limits in Air at Patm and 293.15 K (except if the temperature is indicated)

  • Europe (according to EN1839 for Limits and EN 14522 for autoignition temperature)

    • Auto-ignition temperature
      515
      °C
      959 °F 788.15 K
    • Flash point
      /
    • Lower flammability limit
      2.4
      vol/%
      2.4E4 ppm 2.4E4 ppm 2.4E-2 vol/vol
    • Upper flammability limit
      14.8
      vol/%
      1.48E5 ppm 1.48E5 ppm 1.48E-1 vol/vol
  • US (according to NFPA for Limits and ASTM E659 for autoignition temperature)

    • Auto-ignition temperature
      472
      °C
      881.6 °F 745.15 K
    • Flash point
      /
    • Lower flammability limit
      3
      vol/%
      3.E4 ppm 3.E4 ppm 0.03 vol/vol
    • Upper flammability limit
      12.5
      vol/%
      1.25E5 ppm 1.25E5 ppm 1.25E-1 vol/vol

Odor

none

Metals

  • Aluminium
    Satisfactory
  • Brass
    Satisfactory
  • Monel
    Satisfactory
  • Copper
    Satisfactory
  • Ferritic Steel
    Satisfactory
  • Stainless steel
    Satisfactory
  • Zinc
    Satisfactory
  • Titanium
    no data

Plastics

  • Polytetrafluoroethylene
    Satisfactory
  • Polychlorotrifluoroethylene
    Satisfactory
  • Polyvinylidene fluoride
    Satisfactory
  • Polyvinyl chloride
    Satisfactory
  • Ethylene tetrafluoroethylene
    Satisfactory
  • Polycarbonate
    no data
  • Polyamide
    Satisfactory
  • Polypropylene
    Satisfactory

Elastomers

  • Buthyl (isobutene- isoprene) rubber
    Not recommended
    significant loss of mass
  • Nitrile rubber
    Satisfactory
  • Chloroprene
    Not recommended
    significant loss of mass
  • Chlorofluorocarbons
    Satisfactory
  • Silicon
    Not recommended
    significant loss of mass
  • Perfluoroelastomers
    Satisfactory
  • Fluoroelastomers
    Satisfactory
  • Nitrile rubber
    Satisfactory
  • Neoprene
    Satisfactory
  • Polyurethane
    Satisfactory
  • Ethylene-Propylene
    Not recommended
    significant swelling

Lubricants

  • Hydrocarbon based lubricant
    Satisfactory
  • Fluorocarbon based lubricant
    Satisfactory

Materials compatibility

Recommendations : Air Liquide has gathered data on the compatibility of gases with materials to assist you in evaluating which materials 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- Metallic materials: ISO11114-1 (March 2012), Part 2 - Non-metallic materials: ISO11114-2 (April 2013), it must be used with extreme caution and engineering judgement. No raw data such as these can cover all conditions of concentration, temperature, humidity, impurities and aeration. It is therefore recommended that this table is only used to identify possible materials for applications at high pressure and ambient temperature. Extensive investigation and testing under the specific conditions of use need to be carried out to validate a material selection for a given application. Contact the regional Air Liquide team for expertise service.

C2H6
Ethane

Learn More

General information

More information

Ethane was first discovered by Michael Faraday in 1834, when he electrolyzed a solution of potassium acetate. The name has been derived from "ether", which comes from Latin "aether" and Greek "aithēr", meaning "upper air."