Methane Gas
Methane
From Wikipedia, the free encyclopedia
Methane
IUPAC name[hide]
Methane[1] (substitutive)
Tetrahydridocarbon[1] (additive)
Identifiers
CAS number 74-82-8
PubChem 297
ChemSpider 291
EC number 200-812-7
UN number 1971
KEGG C01438
MeSH Methane
ChEBI CHEBI:16183
ChEMBL CHEMBL17564
RTECS number PA1490000
Beilstein Reference 1718732
Gmelin Reference 59
3DMet B01450
Jmol-3D images Image 1
SMILES
[show]
InChI
[show]
Properties
Molecular formula CH4
Molar mass 16.04 g mol−1
Appearance Colorless gas
Odor Odorless
Density 0.6556 g L−1
Melting point
-182 °C, 90.7 K, -296 °F
Boiling point
-164--160 °C, 109-113 K, -263--256 °F
Solubility in water 22.7 mg L−1 log P 1.09 kH 14 nmol Pa−1 kg−1
Structure
Molecular shape Tetrahedron
Dipole moment 0 D
Thermochemistry
Std enthalpy of formation ΔfHo298 −74.87 kJ mol−1
Std enthalpy of combustion ΔcHo298 −891.1–−890.3 kJ mol−1
Standard molar entropy So298 186.25 J K−1 mol−1
Specific heat capacity, C 35.69 J K−1 mol−1
Hazards[2]
MSDS External MSDS
GHS pictograms
GHS signal word DANGER
GHS hazard statements H220
GHS precautionary statements P210
EU Index 601-001-00-4
EU classification F+
R-phrases R12
S-phrases (S2), S16, S33
NFPA 704
410
Flash point −188 °C
Autoignition
temperature 537 °C
Explosive limits 5–15%
Related compounds
Related alkanes
Methyl iodide
Diiodomethane
Iodoform
Carbon tetraiodide
Ethane
Ethyl iodide
Supplementary data page
Structure and properties n, εr, etc.
Thermodynamic
data Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS (verify) (what is: /?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references
Methane (/ˈmɛθeɪn/ or /ˈmiːθeɪn/) is a chemical compound with the chemical formula CH4. It is the simplest alkane and the main component of natural gas. The relative abundance of methane makes it an attractive fuel. However, because it
From Wikipedia, the free encyclopedia
Methane
IUPAC name[hide]
Methane[1] (substitutive)
Tetrahydridocarbon[1] (additive)
Identifiers
CAS number 74-82-8
PubChem 297
ChemSpider 291
EC number 200-812-7
UN number 1971
KEGG C01438
MeSH Methane
ChEBI CHEBI:16183
ChEMBL CHEMBL17564
RTECS number PA1490000
Beilstein Reference 1718732
Gmelin Reference 59
3DMet B01450
Jmol-3D images Image 1
SMILES
[show]
InChI
[show]
Properties
Molecular formula CH4
Molar mass 16.04 g mol−1
Appearance Colorless gas
Odor Odorless
Density 0.6556 g L−1
Melting point
-182 °C, 90.7 K, -296 °F
Boiling point
-164--160 °C, 109-113 K, -263--256 °F
Solubility in water 22.7 mg L−1 log P 1.09 kH 14 nmol Pa−1 kg−1
Structure
Molecular shape Tetrahedron
Dipole moment 0 D
Thermochemistry
Std enthalpy of formation ΔfHo298 −74.87 kJ mol−1
Std enthalpy of combustion ΔcHo298 −891.1–−890.3 kJ mol−1
Standard molar entropy So298 186.25 J K−1 mol−1
Specific heat capacity, C 35.69 J K−1 mol−1
Hazards[2]
MSDS External MSDS
GHS pictograms
GHS signal word DANGER
GHS hazard statements H220
GHS precautionary statements P210
EU Index 601-001-00-4
EU classification F+
R-phrases R12
S-phrases (S2), S16, S33
NFPA 704
410
Flash point −188 °C
Autoignition
temperature 537 °C
Explosive limits 5–15%
Related compounds
Related alkanes
Methyl iodide
Diiodomethane
Iodoform
Carbon tetraiodide
Ethane
Ethyl iodide
Supplementary data page
Structure and properties n, εr, etc.
Thermodynamic
data Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS (verify) (what is: /?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references
Methane (/ˈmɛθeɪn/ or /ˈmiːθeɪn/) is a chemical compound with the chemical formula CH4. It is the simplest alkane and the main component of natural gas. The relative abundance of methane makes it an attractive fuel. However, because it