Chemical Properties of Methane (CAS 74-82-8)

Methane

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InChI
InChI=1S/CH4/h1H4
InChI Key
VNWKTOKETHGBQD-UHFFFAOYSA-N
Formula
CH4
SMILES
C
Molecular Weight1
16.04
CAS
74-82-8
Other Names
  • Biogas
  • CH4
  • Fire Damp
  • Marsh gas
  • Methyl hydride
  • R 50
  • R 50 (refrigerant)
Sources

Physical Properties

Property Value Unit Source
PAff 543.50 kJ/mol NIST
BasG 520.60 kJ/mol NIST
Δcgas [-891.80; -890.16] kJ/mol Show Hide
Δcgas -890.70 ± 0.40 kJ/mol NIST
Δcgas -890.35 ± 0.30 kJ/mol NIST
Δcgas -891.80 ± 1.10 kJ/mol NIST
Δcgas -890.16 ± 0.30 kJ/mol NIST
Δfgas [-74.85; -73.40] kJ/mol Show Hide
Δfgas -74.60 ± 0.30 kJ/mol NIST
Δfgas -74.50 ± 0.40 kJ/mol NIST
Δfgas -74.85 ± 0.31 kJ/mol NIST
Δfgas -73.40 ± 1.10 kJ/mol NIST
IE [12.51; 13.60] eV Show Hide
IE 12.61 ± 0.01 eV NIST
IE 12.61 ± 0.01 eV NIST
IE 12.60 ± 0.40 eV NIST
IE 12.63 ± 0.02 eV NIST
IE Outlier 13.60 eV NIST
IE 12.75 ± 0.02 eV NIST
IE 12.82 ± 0.02 eV NIST
IE 12.60 eV NIST
IE 12.60 eV NIST
IE 12.80 eV NIST
IE 12.64 eV NIST
IE 12.94 ± 0.04 eV NIST
IE 12.51 eV NIST
IE 12.51 eV NIST
IE 12.62 ± 0.01 eV NIST
IE 12.78 eV NIST
IE 12.75 eV NIST
IE 12.70 eV NIST
IE 12.99 ± 0.05 eV NIST
IE 12.75 ± 0.05 eV NIST
IE 12.90 eV NIST
IE 12.70 eV NIST
IE 12.55 ± 0.05 eV NIST
IE 12.70 ± 0.01 eV NIST
IE 12.71 ± 0.02 eV NIST
IE 13.00 ± 0.02 eV NIST
IE Outlier 13.60 eV NIST
IE Outlier 13.60 ± 0.10 eV NIST
IE Outlier 13.60 eV NIST
logPoct/wat 0.636 Crippen Calculated Property
Pc [4399.20; 5760.00] kPa Show Hide
Pc 4599.00 ± 3.00 kPa NIST
Pc 4595.00 ± 10.00 kPa NIST
Pc 4599.20 ± 3.00 kPa NIST
Pc 4604.00 kPa NIST
Pc 4597.97 ± 0.10 kPa NIST
Pc 4399.20 ± 2.00 kPa NIST
Pc 4620.00 ± 40.00 kPa NIST
Pc 4595.00 ± 2.00 kPa NIST
Pc 4598.83 kPa NIST
Pc 4595.70 ± 0.45 kPa NIST
Pc 4626.00 ± 34.47 kPa NIST
Pc 4620.00 ± 15.19 kPa NIST
Pc 4608.00 ± 34.47 kPa NIST
Pc 4630.00 ± 101.33 kPa NIST
Pc 4640.00 ± 101.33 kPa NIST
Pc 4620.42 ± 30.39 kPa NIST
Pc 4620.00 ± 40.53 kPa NIST
Pc Outlier 5560.00 ± 1013.20 kPa NIST
Pc 5070.00 ± 405.30 kPa NIST
Pc Outlier 5760.00 ± 1013.20 kPa NIST
Pc 4740.00 ± 202.65 kPa NIST
Ptriple [9.30; 12.26] kPa Show Hide
Ptriple 11.69 ± 0.00 kPa NIST
Ptriple 11.74 ± 0.01 kPa NIST
Ptriple 11.69 ± 0.00 kPa NIST
Ptriple 11.68 ± 0.06 kPa NIST
Ptriple 11.74 kPa NIST
Ptriple 11.74 ± 0.04 kPa NIST
Ptriple 11.69 ± 0.00 kPa NIST
Ptriple 11.65 ± 0.50 kPa NIST
Ptriple 11.66 ± 0.02 kPa NIST
Ptriple 11.67 ± 0.01 kPa NIST
Ptriple 11.68 ± 0.01 kPa NIST
Ptriple 11.69 ± 0.01 kPa NIST
Ptriple 11.71 ± 0.01 kPa NIST
Ptriple 11.66 ± 0.01 kPa NIST
Ptriple 11.71 ± 0.01 kPa NIST
Ptriple 11.67 ± 0.02 kPa NIST
Ptriple 11.65 kPa NIST
Ptriple 11.68 ± 0.01 kPa NIST
Ptriple 11.74 ± 0.01 kPa NIST
Ptriple 11.63 ± 0.13 kPa NIST
Ptriple Outlier 9.30 ± 0.26 kPa NIST
Ptriple 12.26 ± 0.26 kPa NIST
Ptriple 10.66 kPa NIST
gas 188.66 ± 0.42 J/mol×K NIST
Tboil [109.20; 112.00] K Show Hide
Tboil 111.70 K NIST
Tboil 111.65 ± 0.00 K NIST
Tboil 111.60 ± 0.20 K NIST
Tboil 111.70 K NIST
Tboil 111.70 ± 0.30 K NIST
Tboil 111.65 K NIST
Tboil 111.65 ± 0.07 K NIST
Tboil 112.00 ± 0.50 K NIST
Tboil 112.00 ± 0.50 K NIST
Tboil 112.00 ± 0.50 K NIST
Tboil 111.50 ± 0.50 K NIST
Tboil 110.20 ± 1.00 K NIST
Tboil Outlier 109.20 ± 1.00 K NIST
Tc [173.70; 199.70] K Show Hide
Tc 190.56 ± 0.01 K NIST
Tc 190.55 ± 0.01 K NIST
Tc 190.58 K NIST
Tc 190.53 ± 0.05 K NIST
Tc 190.55 ± 0.01 K NIST
Tc 190.60 K NIST
Tc 190.78 ± 0.40 K NIST
Tc 190.55 ± 0.05 K NIST
Tc 190.55 K NIST
Tc 190.53 ± 0.00 K NIST
Tc 190.78 ± 0.40 K NIST
Tc 190.57 ± 0.10 K NIST
Tc 190.60 ± 0.15 K NIST
Tc 190.30 ± 0.40 K NIST
Tc 190.59 ± 0.40 K NIST
Tc 190.70 ± 0.40 K NIST
Tc 191.07 ± 0.60 K NIST
Tc 190.30 ± 0.50 K NIST
Tc 190.30 ± 0.60 K NIST
Tc 191.40 ± 1.00 K NIST
Tc Outlier 173.70 ± 20.00 K NIST
Tc Outlier 199.70 ± 10.00 K NIST
Tc 197.50 ± 7.00 K NIST
Tfus [85.70; 91.20] K Show Hide
Tfus 85.70 ± 0.20 K NIST
Tfus 90.60 ± 0.30 K NIST
Tfus 91.20 ± 2.00 K NIST
Tfus 90.60 ± 0.20 K NIST
Tfus 90.50 ± 0.20 K NIST
Ttriple [87.40; 90.80] K Show Hide
Ttriple 90.68 ± 0.00 K NIST
Ttriple 90.68 ± 0.02 K NIST
Ttriple 90.68 ± 0.01 K NIST
Ttriple 90.68 ± 0.01 K NIST
Ttriple 90.67 ± 0.01 K NIST
Ttriple 90.68 ± 0.01 K NIST
Ttriple 90.67 ± 0.02 K NIST
Ttriple 90.68 ± 0.03 K NIST
Ttriple 90.68 ± 0.02 K NIST
Ttriple 90.68 ± 0.00 K NIST
Ttriple 90.67 ± 0.01 K NIST
Ttriple 90.66 ± 0.05 K NIST
Ttriple Outlier 88.65 ± 0.20 K NIST
Ttriple 90.64 ± 0.05 K NIST
Ttriple 90.66 ± 0.06 K NIST
Ttriple 90.67 ± 0.01 K NIST
Ttriple 90.67 K NIST
Ttriple 90.64 ± 0.05 K NIST
Ttriple 90.67 ± 0.02 K NIST
Ttriple 90.66 ± 0.01 K NIST
Ttriple 90.67 ± 0.03 K NIST
Ttriple 90.66 ± 0.02 K NIST
Ttriple 90.35 ± 0.50 K NIST
Ttriple 90.63 K NIST
Ttriple 90.67 ± 0.10 K NIST
Ttriple 90.68 ± 0.05 K NIST
Ttriple 90.65 ± 0.15 K NIST
Ttriple 90.25 ± 0.15 K NIST
Ttriple 89.85 ± 0.20 K NIST
Ttriple 90.00 ± 0.10 K NIST
Ttriple 90.80 ± 1.00 K NIST
Ttriple Outlier 87.40 K NIST
Vc 0.099 m3/kg-mol NIST
Vc 0.099 m3/kg-mol NIST
Vc 0.100 ± 0.001 m3/kg-mol NIST

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas 34.92 ± 0.25 J/mol×K 279.0 NIST
ΔfusH 0.94 kJ/mol 90.7 NIST
ΔsubH [9.20; 10.00] kJ/mol [63.00; 84.00] Show Hide
Plot of Enthalpy of sublimation at a given temperature.
ΔsubH 9.70 kJ/mol 63.0 NIST
ΔsubH 9.70 kJ/mol 72.0 NIST
ΔsubH 9.20 kJ/mol 72.0 NIST
ΔsubH 9.62 kJ/mol 77.5 NIST
ΔsubH 10.00 kJ/mol 84.0 NIST
ΔvapH [4.00; 8.70] kJ/mol [99.00; 180.00] Show Hide
Plot of Enthalpy of vaporization at a given temperature.
ΔvapH 8.50 ± 0.10 kJ/mol 99.0 NIST
ΔvapH 8.52 kJ/mol 99.54 NIST
ΔvapH 8.60 kJ/mol 101.0 NIST
ΔvapH 8.60 kJ/mol 105.0 NIST
ΔvapH 8.60 kJ/mol 109.0 NIST
ΔvapH 8.17 kJ/mol 111.7 NIST
ΔvapH 8.20 kJ/mol 112.0 NIST
ΔvapH 7.50 kJ/mol 130.0 NIST
ΔvapH 8.40 kJ/mol 132.0 NIST
ΔvapH 8.10 kJ/mol 137.0 NIST
ΔvapH 8.50 kJ/mol 140.5 NIST
ΔvapH 8.60 kJ/mol 145.0 NIST
ΔvapH 8.50 kJ/mol 149.0 NIST
ΔvapH 5.90 kJ/mol 160.0 NIST
ΔvapH 8.70 kJ/mol 168.5 NIST
ΔvapH 4.00 kJ/mol 180.0 NIST
ΔvapS 85.58 J/mol×K 99.54 NIST

Similar Compounds

Glutaric acid, 3-methylpentyl pentadecyl ester. Glutaric acid, nonyl 2,4,6-trichlorophenyl ester. Benzene, 1,2,3-trichloro-4-methoxy-. 6-Chloro-7-sulfamyl-3,4-dihydro-1,2,4-benzothiadiazine-1,1-dioxide. 1-methyl-cis-2-(1-ethenyl)-cyclopropane. Acetone-D6. Benzene, 1,3,5-trichloro-2,4,6-trifluoro-. Sarcosylsarcosine, n-propoxycarbonyl-, heptyl ester. (-)-«beta»-acoradiene. Glutaric acid, monochloride, 2-methoxyphenyl ester. (+-)-3-hydroxybutyric acid, trifluoroacetate. Benzenemethanamine, N-methyl-N-2-propynyl-. 20-Methylcholanthrene. Butane, 1,1'-sulfonylbis-. M-toluidine, n-(p-methoxybenzylidene)-4-(p-methoxyphenylazo)-, hydrogen tetrafluoroborate.

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