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Hydrogen sulfide
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Hydrogen sulfide
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H2S
Hydrogen sulfide

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
    34.081
    g/mol
  • Content in air
    /

Critical Point

  • Temperature
    99.95
    °C
    211.91 °F 373.1 K
  • Pressure
    90
    bar
    9.E6 pa 1305.3391 lbf/in2 88.8231 Atm 9000 Kpa 6.7506E4 mmHg
  • Density
    347.28
    kg/m³
    21.6799 lb/ft³

Triple Point

  • Temperature
    - 85.45
    °C
    - 121.81 °F 187.7 K
  • Pressure
    2.32E-1
    bar
    2.32E4 pa 3.3649 lbf/in2 2.2897E-1 Atm 23.2 Kpa 174.0148 mmHg
Pressure 1.013 bar
  • Melting point
    - 85.7
    °C
    - 122.26 °F 187.45 K
  • Latent heat of fusion (at melting point)
    69.731
    kJ/kg
    29.9991 Btu/lb 16.6661 kcal/kg
  • Solid density
    /
Pressure 1.013 bar
  • Liquid density
    949.2
    kg/m³
    59.2565 lb/ft³
  • Boiling point
    - 60.3
    °C
    - 76.54 °F 212.85 K
  • Latent heat of vaporization (at boiling point)
    546.41
    kJ/kg
    235.0717 Btu/lb 130.5951 kcal/kg
Pressure1.013barTemperature
  • Compressibility factor Z
    9.8989E-1
    9.9148E-1
    9.9236E-1
  • Cp/Cv ratio γ
    1.337
    1.3333
    1.331
  • Dynamic viscosity
    1.1298E-4
    Po
    11.298 µPa.s 1.1298E-5 PA.S 7.5919E-6 lb/ft/s
    1.195E-4
    Po
    11.95 µPa.s 1.195E-5 PA.S 8.0301E-6 lb/ft/s
    1.2387E-4
    Po
    12.387 µPa.s 1.2387E-5 PA.S 8.3237E-6 lb/ft/s
  • Gas density at boiling point
    1.997
    kg/m³
    1.2467E-1 lb/ft³
    1.997
    kg/m³
    1.2467E-1 lb/ft³
    1.997
    kg/m³
    1.2467E-1 lb/ft³
  • Gas density
    1.5357
    kg/m³
    9.587E-2 lb/ft³
    1.4534
    kg/m³
    9.0733E-2 lb/ft³
    1.4034
    kg/m³
    8.7611E-2 lb/ft³
  • Heat capacity at constant pressure Cp
    1.0116
    kJ/(kg.K)
    2.4177E-1 BTU/lb∙°F 1011.561 J/kg∙K 2.4177E-1 kcal/kg∙K
    1.0126
    kJ/(kg.K)
    2.4201E-1 BTU/lb∙°F 1012.588 J/kg∙K 2.4201E-1 kcal/kg∙K
    1.014
    kJ/(kg.K)
    2.4235E-1 BTU/lb∙°F 1013.996 J/kg∙K 2.4235E-1 kcal/kg∙K
  • Heat capacity at constant volume Cv
    7.5658E-1
    kJ/(kg.K)
    1.8083E-1 BTU/lb∙°F 756.58 J/kg∙K 1.8083E-1 kcal/kg∙K
    7.5946E-1
    kJ/(kg.K)
    1.8151E-1 BTU/lb∙°F 759.455 J/kg∙K 1.8151E-1 kcal/kg∙K
    7.6186E-1
    kJ/(kg.K)
    1.8209E-1 BTU/lb∙°F 761.861 J/kg∙K 1.8209E-1 kcal/kg∙K
  • Liquid (at boiling point)/gas equivalent
    618.09
    mol/mol
    653.09
    mol/mol
    676.36
    mol/mol
  • Solubility in water
    /
    2.335E-3
    mol/mol
    1.85E-3
    mol/mol
  • Specific gravity
    1.19
    1.19
    1.19
  • Specific volume
    6.512E-1
    m³/kg
    10.4312 ft³/lb
    6.881E-1
    m³/kg
    11.0223 ft³/lb
    7.126E-1
    m³/kg
    11.4147 ft³/lb
  • Thermal conductivity
    15.609
    mW/m∙K
    9.0247E-3 Btu/ft/h/°F 1.343E-1 cal/hour∙cm∙°C 3.7306E-5 cal/s∙cm∙°C 1.5609E-2 W/(m∙K)
    16.605
    mW/m∙K
    9.6006E-3 Btu/ft/h/°F 1.4287E-1 cal/hour∙cm∙°C 3.9687E-5 cal/s∙cm∙°C 1.6605E-2 W/(m∙K)
    17.28
    mW/m∙K
    9.9909E-3 Btu/ft/h/°F 1.4868E-1 cal/hour∙cm∙°C 4.13E-5 cal/s∙cm∙°C 1.728E-2 W/(m∙K)
  • Vapor pressure
    10.3288
    bar
    1.0329E6 pa 149.8065 lbf/in2 10.1937 Atm 1032.88 Kpa 7747.2585 mmHg
    15.6544
    bar
    1.5654E6 pa 227.0478 lbf/in2 15.4497 Atm 1565.44 Kpa 1.1742E4 mmHg
    20.1687
    bar
    2.0169E6 pa 292.5221 lbf/in2 19.905 Atm 2016.87 Kpa 1.5128E4 mmHg
H2S
Hydrogen sulfide

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)
H2S
Hydrogen sulfide

Applications

Examples of uses of this molecule in Industry and Healthcare

Laboratories & Research Centers

Hydrogen sulfide is used in calibration gas mixtures for petrochemical industry, environmental emission monitoring, industrial hygiene monitors and trace impurity analyzers. Balance gas for some calibration mixtures.

Laboratories & Research Centers

Pharma & Biotech

Hydrogen sulfide is a reactant in some chemical processes.

Pharma & Biotech

Electronic components

Hydrogen sulfide provides sulphur source to cupper indium gallium film to adjust the light absorption bandgap in chalcogenide thin film photovoltaics.

Electronic components
H2S
Hydrogen sulfide

Safety

Information to safely use this molecule

  • Major hazards
  • Material compatibility
  • GHS02
    Flammable
  • GHS04
    Gas under pressure
  • GHS06
    Acute Toxicity
  • GHS09
    Hazardous to the environment

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
      270
      °C
      518 °F 543.15 K
    • Flash point
      /
    • Lower flammability limit
      3.9
      vol/%
      3.9E4 ppm 3.9E4 ppm 3.9E-2 vol/vol
    • Upper flammability limit
      50.2
      vol/%
      5.02E5 ppm 5.02E5 ppm 5.02E-1 vol/vol
  • US (according to NFPA for Limits and ASTM E659 for autoignition temperature)

    • Auto-ignition temperature
      260
      °C
      500 °F 533.15 K
    • Flash point
      /
    • Lower flammability limit
      4
      vol/%
      4.E4 ppm 4.E4 ppm 0.04 vol/vol
    • Upper flammability limit
      44
      vol/%
      4.4E5 ppm 4.4E5 ppm 0.44 vol/vol

Threshold of toxicity

  • VME
    5
    ppm
    or 7
    mg/m3
  • VLE
    10
    ppm
    or 14
    mg/m3
  • ILV-8h
    5
    ppm
    or 7
    mg/m3
  • ILV 15mn
    10
    ppm
    or 14
    mg/m3
  • TLV-TWA (USA)
    5
    ppm
    5 ppm 5.E-4 vol/% 5.E-6 vol/vol
  • TLV-STEL (USA)
    /

Odor

Rotten egg

Metals

  • Aluminium
    Satisfactory
  • Brass
    Not recommended
  • Monel
    Satisfactory
  • Copper
    no data
  • Ferritic Steel
    Satisfactory
  • Stainless steel
    Satisfactory
  • Zinc
    no data
  • Titanium
    no data

Plastics

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

Elastomers

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

Lubricants

  • Hydrocarbon based lubricant
    Not recommended
    contamination of the material
  • Fluorocarbon based lubricant
    Not recommended
    contamination of the material

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.

H2S
Hydrogen sulfide

Learn More

General information

More information

The human body produces small amounts of hydrogen sulfide.