Compound: methane
SMILES: [CH]
InChIKey: VRLIPUYDFBXWCH-UHFFFAOYSA-N
Synonyms: methane, Marsh gas, Methyl hydride, Fire Damp, Biogas, 74-82-8, R 50 (refrigerant), methan, metano, tetrahydridocarbon, HSDB 167, Methane in gaseus state, UN1971, UN1972, BRN 1718732, OP0UW79H66, CH4, DTXSID8025545, CHEBI:16183, R 50, UNII-OP0UW79H66, Methane-12C, RefChem:6654, methane;tetrahydridocarbon, AC1L18XA, CHEMBL17564, DTXCID705545, CTK2H7747, AC1Q2825, AKOS005166816, C01438, 0CB689EE-132E-4559-A597-C79A40192203, 200-812-7, 02329_FLUKA, 14493-06-2, 150036-83-2, 295477_ALDRICH, 3B4-2254, 463035_ALDRICH, 490210_ALDRICH, 8006-14-2, AG-E-08601, AR-1A0383, AR-1A0497, Biodiesels, C5M, KST-1A1445, KST-1A1563, MolPort-018-618-244, Natural gas, MFCD00133992, Unalloyed steel, Alloy steel, C in Steel, C in Steel, chips, Carbon and Sulphur in Cast Iron, MFCD00144065, MFCD00146977, MFCD00211867, Methylidyne radical, EINECS 200-812-7, Graphene nanoplatelets (6-8 nm thick x 5 microns wide), a methyl group, GO quantum dots, Gas, natural, Methane-d?, N-doped Grpahene, high purity SWNTs, N-doped MWCNTs, 74C, MWCNTs water paste, Flash-ignited MWNTs, Electrode pole pieces, Liquified natural gas, Synthetic natural gas, Methane [WHO-DD], Acetylene carbon black, rGO-NH-Carboimidazole, MWNTs water suspension, C/S in Steel, chips, GO quantum dots powder, Nitrogen doped CMK-3, MWNTs DMSO suspension, PEG@GO, PEI@GO, MWCNTs water suspension, METHANE [HSDB], SCHEMBL93, GO quantum dots(Powder), METHANE [MI], MWCNTs(long) 4-6nm, MWNTs(short) 4-6 nm, NanoIntegris Dielectic ink, SCHEMBL148, SCHEMBL777, SCHEMBL778, SCHEMBL849, GrapheitizedMWNT 8-15nm, MWCNTs(long) 5-15nm, GO quantum dots (solvent), EC 200-812-7, Grapheitized MWNTs >50nm, Methane, >=99.0%, Customized MWNTs dispersion, GO quantum dots(20mg/ml), Methane, analytical standard, MWNTs(short) 5-15 nm, MWNTs(short) 8-15 nm, CH2H2, CMK-3, CMK-8, MWCNTs(long) 20-30nm, MWCNTs(long) 8-15 nm, UNII-6GRV67N0U2, 4-01-00-00003 (Beilstein Handbook Reference), MWNTs(short) 20-30 nm, MWNTs(short) 30-50 nm, Nanointegris ultrapure SWCNTs, UN 1971 (Salt/Mix), UN 1972 (Salt/Mix), Graphitized MWNTs 10-20nm, Low Purity Carboxylic SWCNTs, GO quantum dots(C: 1mg/ml), Grapheitized MWNTs 20-30nm, Grapheitized MWNTs 30-50nm, Low purity Hydroxylate SWCNTs, METHANE (13C,D4), MWNTs ethyl acetate suspension, METHANE [EP MONOGRAPH], MWNTs Butyl acetate suspension, Carboxyl MWCNTs(long) <8 nm, Carboxyl MWCNTs(long) 4-6nm, GO quantum dots yellow(Powder), Graphene nanopowder (6-8 nm), Industrial grade MWNTs 50 nm, MWNTs (long) 10-20 nm, SCHEMBL1304500, Carbon and Sulfur in Pure Iron, Carboxyl MWCNTs(short) 4-6nm, CHEMBL2106049, Diamond nanopowder  (3-4 nm), Diamond nanopowder (4-15 nm), Conductive Flexible TPU Filament, GO quantum dots yellow(1mg/ml), Graphene nanopowder  (1-5 nm), High Purified Carboxylic SWCNTS, Ultrapure SWCNTs NMP dispersion, High Purified Hydroxylate SWCNTS, Lowpurity hydroxy SWCNTs (long), NanoIntegris metallic SWCNTs70%, NanoIntegris metallic SWCNTs90%, NanoIntegris metallic SWCNTs95%, Lowpurity carboxyl SWCNTs (long), Carbon powder  (20~50 micron), Graphene nanopowder (11-15 nm), Industrial grade MWNTs 10-20nm, Industrial grade MWNTs 20-30nm, Industrial grade MWNTs 50-60nm, Industrial grade MWNTs 8-15 nm, Industrial grade MWNTs 9-16 nm, MWNTs isopropyl alcohol suspension, Carboxyl MWCNTs(short) 5-15 nm, Carboxyl MWCNTs(short) 8-15 nm, Industrial grade MWCNTs 8-15 nm, NanoIntegris metallic SWCNTs 98%, NanoIntegris metallic SWCNTs 99%, High purity SWNTs 0.7-2.5 nm, Highpurity carboxyl SWCNTs (short), Industrial grade MWNTs 13-17 nm, Industrial Grade MWNTs 20-40 nm, Largeinner diameter thin-wall MWNTs, Ultrapure SWCNTs aqueous dispersion, EINECS 232-343-9, EINECS 240-383-3, High purity carboxyl SWCNTs (long), Grapheitized Carboxyl MWNTs >50 nm, Grapheitized Carboxyl MWNTs 8-15nm, GrapheitizedCarboxyl MWNTs 10-20nm, GrapheitizedCarboxyl MWNTs 20-30nm, GrapheitizedCarboxyl MWNTs 30-50nm, MFCD06411993, MFCD07370731, MFCD09753896, NA1361, NanoIntegris SWCNTs with high purity, Hydroxylate MWNTs(short) 30-50 nm, Grapheitized Hydroxylate MWNT 8-15nm, GrapheitizedHydroxylate MWNTs >50 nm, Industrial Carboxylic SWCNTs 1-2 nm, DB09278, FC31972, GrapheitizedHydroxylate MWNTs 10-20nm, GrapheitizedHydroxylate MWNTs 30-50nm, HIPCO pure Metallic Hipco SWNTs solid, Industrial Hydroxylate SWCNTs 1-2 nm, N-doped MWCNTs (N Content2.98wt%), NanoIntegris metallic SWCNTs70% solid, NanoIntegris metallic SWCNTs90% solid, NanoIntegris metallic SWCNTs95% solid, HIPCO Semiconducting Hipco SWNTs solid, N-doped MWCNTS (N Content3.00wt%), NanoIntegris semiconductive SWCNTs 90%, NanoIntegris semiconductive SWCNTs 95%, NanoIntegris semiconductive SWCNTs 98%, NanoIntegris semiconductive SWCNTs 99%, Carboxyl MWCNTs water paste (~10wt%), Grapheitized Hydroxylate MWNTs 20-30nm, High Purified Large Surface Area SWCNTS, NanoIntegris metallic SWCNTs 98% solid, NanoIntegris metallic SWCNTs 99% solid, Carboxyl MWCNTs water paste (~2.7wt%), DA-51585, FG157042, High-Ni Calibration series, O 38x15 mm, HIPCO pure Metallic Hipco SWNTs Aqueous, HIPCO Semiconducting Hipco SWNTs Aqueous, Methane, electronic grade, >=99.998%, PD053877, Short ultrapure SWCNTs aqueous dispersion, SY074820, Ultrapure Short SWCNTs aqueous dispersion, ICP standard Carbon H2O 1000 microg/mL, Industrial grade carboxylation MWNTs 50nm, Methane, Messer(R) CANGas, 99.999%, NanoIntegris semiconductive SWCNTs 99.9%, Single Layer H-BN Film on SIO2 substrate, Graphite powder (Natural flakes) (1 micron), NS00004509, NS00081852, NS00093167, Carboxylic ultrapure SWCNTs aqueous dispersion, NanoIntegris semiconductive SWCNTs 90% solid, NanoIntegris semiconductive SWCNTs 95% solid, Super activated carbon nanopowder (<100 nm), EC 231-153-3, EC 231-953-2, EC 231-955-3, EC 240-383-3, High concentration MWCNTs water paste(~14wt%), High purity Carboxyl SWCNTs aqueous dispersion, Industrial grade carboxylation MWNTs 20-40 nm, Industrial grade hydroxylation MWCNTs 10-30nm, Industrial grade hydroxylation MWCNTs 20-40nm, Q37129, Activated Charcoal Norit(R) , powder, from peat, NanoIntegris semiconductive SWCNTs 99.9% solid, F094522, Methane-12C, 13C-depleted, 99.9 atom % 12C, Q866179, IsoSol-S100 Pure SemiconductingSWNT+Dielectric ink, Q3333711, Q6823951, Graphitized carbon black - Partical size 100-300um, Q11172462, Graphene powder, 99% C, Nanoparticle diameter 3-10nm, High concentration carboxyl MWCNTs water paste(~13wt%), Nanointegris SWCNTs with small diameter Fe Catalyst 35%, Nanointegris SWCNTs with small diameter Fe Catalyst 5%, Nanointegris SWCNTs with small diameter Fe Catalyst15%, Carbon Nanotube Multi-walled 10-20nm(diam.), 5-15|Im(length), Graphene Nanoplatelets 3nm(thick), 800m2/g(surface area), 1.5?m(diameter), Methane, compressed or natural gas, compressed (with high methane content), Charcoal briquettes, shell, screenings, wood, etc. [NA1361]  [Spontaneously combustible], Graphene nanoplatelets aggregates - (sub-micron particles, surface area 500m2/g, 4H-Pyrrolo[1,2-d][1,4]oxazocine-9-carboxaldehyde,1,2,5,6-tetrahydro-6-hydroxy-4,5-dimethyl-2-oxo-, (4R,5R,6S)-rel-, 58760-46-6, MeH, Methane, compressed or natural gas, compressed (with high methane content) [UN1971]  [Flammable gas], Methane, refrigerated liquid (cryogenic liquid) or natural gas, refrigerated liquid (cryogenic liquid) (with high methane content), Methane, refrigerated liquid (cryogenic liquid) or natural gas, refrigerated liquid (cryogenic liquid) (with high methane content) [UN1972]  [Flammable gas]
Theoretical properties:
molecular_formula: CH4
molecular_weight: 16.043 g/mol
exact_mass: 16.0313001276 g/mol
formal_charge: 0
hydrogen_bond_donor_count: 0
hydrogen_bond_acceptor_count: 0
rotatable_bond_count: 0
heavy_atom_count: 1
isotope_atom_count: 0
covalently_bonded_unit_count: 1
Physical properties:
physical_state: Colorless gas
color: Colorless gas
odor: Odorless
boiling_point: -258 °F at 760 mmHg (USCG, 1999)
melting_point: -296 °F (USCG, 1999)
density: 0.415 to 0.45 at -259.6 °F (USCG, 1999)
solubility: 3.5 mL/100 mL at 63 °F (NTP, 1992)
flash_point: -306 °F (NTP, 1992)
vapor_pressure: 258574 mmHg at 100 °F ; 760 mmHg at -258.7 °F (NTP, 1992)
Descriptions:
pubchem: Methane is a one-carbon compound in which the carbon is attached by single bonds to four hydrogen atoms. It is a colourless, odourless, non-toxic but flammable gas (b.p. 161C). It has a role as a fossil fuel, a member of greenhouse gas and a bacterial metabolite. It is a gas molecular entity, an alkane, a mononuclear parent hydride and a one-carbon compound. It is a conjugate acid of a methanide.
wikipedia: Methane (US:  METH-ayn, UK:  MEE-thayn) is a chemical compound that has the chemical formula CH4 (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The abundance of methane on Earth makes it an economically attractive fuel, although capturing and storing it is difficult because it is a gas at standard temperature and pressure. In the Earth's atmosphere methane is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas. Methane is an organic hydrocarbon, and among the simplest of organic compounds.
Naturally occurring methane is found both below ground and under the seafloor and is formed by both geological and biological processes. The largest reservoir of methane is under the seafloor in the form of methane clathrates. When methane reaches the surface and the atmosphere, it is known as atmospheric methane.
The Earth's atmospheric methane concentration has increased by about 160% since 1750, with the overwhelming percentage caused by human activity. It accounted for 20% of the total radiative forcing from all of the long-lived and globally mixed greenhouse gases, according to the 2021 Intergovernmental Panel on Climate Change report. Strong, rapid and sustained reductions in methane emissions could limit near-term warming and improve air quality by reducing global surface ozone.
Methane has also been detected on other planets, including Mars, which has implications for astrobiology research.