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Methanol
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Methanol
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CH3OH
Methanol

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
    32.042
    g/mol
  • Content in air
    /

Critical Point

  • Temperature
    239.45
    °C
    463.01 °F 512.6 K
  • Pressure
    81.035
    bar
    8.1035E6 pa 1175.3128 lbf/in2 79.9753 Atm 8103.5 Kpa 6.0781E4 mmHg
  • Density
    275.56
    kg/m³
    17.2026 lb/ft³

Triple Point

  • Temperature
    - 97.54
    °C
    - 143.572 °F 175.61 K
  • Pressure
    1.86E-6
    bar
    1.86E-1 pa 2.6977E-5 lbf/in2 1.8357E-6 Atm 1.86E-4 Kpa 1.3951E-3 mmHg
Pressure 1.013 bar
  • Melting point
    - 97.68
    °C
    - 143.824 °F 175.47 K
  • Latent heat of fusion (at melting point)
    100.34
    kJ/kg
    43.1674 Btu/lb 23.9818 kcal/kg
  • Solid density
    /
Pressure 1.013 bar
  • Liquid density
    748.36
    kg/m³
    46.7185 lb/ft³
  • Boiling point
    64.48
    °C
    148.064 °F 337.63 K
  • Latent heat of vaporization (at boiling point)
    1101.1
    kJ/kg
    473.7055 Btu/lb 263.1692 kcal/kg
Pressure1.013barTemperature
  • Compressibility factor Z
    /
    /
    /
  • Cp/Cv ratio γ
    /
    /
    /
  • Dynamic viscosity
    /
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  • Gas density at boiling point
    1.221
    kg/m³
    7.6224E-2 lb/ft³
    1.221
    kg/m³
    7.6224E-2 lb/ft³
    1.221
    kg/m³
    7.6224E-2 lb/ft³
  • Gas density
    /
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  • Heat capacity at constant pressure Cp
    /
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    /
  • Heat capacity at constant volume Cv
    /
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  • Liquid (at boiling point)/gas equivalent
    /
    /
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  • Solubility in water
    /
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  • Specific gravity
    /
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  • Specific volume
    /
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  • Thermal conductivity
    /
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  • Vapor pressure
    3.95E-2
    bar
    3950 pa 5.729E-1 lbf/in2 3.8983E-2 Atm 3.95 Kpa 29.6275 mmHg
    9.8E-2
    bar
    9800 pa 1.4214 lbf/in2 9.6718E-2 Atm 9.8 Kpa 73.5062 mmHg
    1.698E-1
    bar
    1.698E4 pa 2.4627 lbf/in2 1.6758E-1 Atm 16.98 Kpa 127.3608 mmHg
CH3OH
Methanol

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)
CH3OH
Methanol

Applications

Examples of uses of this molecule in Industry and Healthcare

Laboratories & Research Centers

Methanol is used as solvant in liquid chromatography and UV spectroscopy.

 

Laboratories & Research Centers

Metal fabrication

Methanol is used for the heat treatment of metallic products.

 

Metal fabrication

Automotive

Methanol is used for the heat treatment of metallic pieces in vehicles.

Methanol is used as fuel either as direct blend with gasoline or after conversion to  MTBE, gasoline, DME, olefins or biodiesel.

Automotive

Chemicals

Methanol is widely used in the chemical industry to produce other chemicals. It is converted to formaldehyde, mainly for plywood production, acetic acid, olefins such as ethylene and propylene

Chemicals
CH3OH
Methanol

Safety

Information to safely use this molecule

  • Major hazards
  • Material compatibility
  • GHS02
    Flammable
  • GHS06
    Acute Toxicity
  • GHS08
    Serious health hazard

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
      440
      °C
      824 °F 713.15 K
    • Flash point
      9
      °C
      48.2 °F 282.15 K
    • Lower flammability limit
      5.4
      vol/%
      5.4E4 ppm 5.4E4 ppm 5.4E-2 vol/vol
    • Upper flammability limit (at 373.15 K)
      50
      vol/%
      5.E5 ppm 5.E5 ppm 0.5 vol/vol
  • US (according to NFPA for Limits and ASTM E659 for autoignition temperature)

    • Auto-ignition temperature
      464
      °C
      867.2 °F 737.15 K
    • Flash point
      11
      °C
      51.8 °F 284.15 K
    • Lower flammability limit
      6
      vol/%
      6.E4 ppm 6.E4 ppm 0.06 vol/vol
    • Upper flammability limit
      36
      vol/%
      3.6E5 ppm 3.6E5 ppm 0.36 vol/vol

Threshold of toxicity

  • VME
    /
  • VLE
    200
    ppm
    or 260
    mg/m3
  • ILV-8h
    200
    ppm
    or 260
    mg/m3
  • ILV 15mn
    /
  • TLV-TWA (USA)
    250
    ppm
    250 ppm 2.5E-2 vol/% 2.5E-4 vol/vol
  • TLV-STEL (USA)
    200
    ppm
    200 ppm 0.02 vol/% 2.E-4 vol/vol

Lethal dose

  • DL50 (orally)
    6000
    ppm
    to 1.4E4
    ppm

Lethal concentration

  • CL50 (in mouse; 1.5h)
    10.E4
    ppm
    10.E4 ppm 10 vol/% 0.1 vol/vol

Metals

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

Plastics

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

Elastomers

  • Buthyl (isobutene- isoprene) rubber
    no data
  • Nitrile rubber
    no data
  • Chloroprene
    no data
  • Chlorofluorocarbons
    no data
  • Silicon
    no data
  • Perfluoroelastomers
    no data
  • Fluoroelastomers
    no data
  • Nitrile rubber
    no data
  • Neoprene
    no data
  • Polyurethane
    no data
  • Ethylene-Propylene
    no data

Lubricants

  • Hydrocarbon based lubricant
    no data
  • Fluorocarbon based lubricant
    no data

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.

CH3OH
Methanol

Learn More

General information

More information

Methanol was isolated for the first time in 1661 by Robert Boyle. He gives him the name of "spirit of the woods." In 1834, Jean Baptiste Dumas and Eugene Melchior called it "methylene" in connection with Greek words: "methy" (wine) and "hyle" (wood).