Methane
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| Names | |||
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| IUPAC name | |||
| Identifiers | |||
| Jmol-3D images | Image | ||
| 3DMet | {{{value}}} | ||
| Beilstein Reference | 1718732 | ||
| ChEBI | CHEBI:16183  |
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| ChEMBL | ChEMBL17564 |
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| ChemSpider | 291 |
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| ECHA InfoCard | 100.000.739 | ||
| EC Nummer | 200-812-7 | ||
| Gmelin Reference | 59 | ||
| KEGG | C01438  |
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| MeSH | Methane | ||
| RTECS nummer | PA1490000 | ||
| UN nummer | 1971 | ||
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| Properties | |||
| CH4 | |||
| Molar mass | 16.04 g·mol−1 | ||
| Appearance | Colorless gas | ||
| Odour | Odorless | ||
| Density | 0.6556 g L−1 | ||
| Meltin pynt | −182.5 °C; −296.4 °F; 90.7 K | ||
| 22.7 mg L−1 | |||
| Solubility | soluble in ethanol, diethyl ether, benzene, toluene, methanol, acetone | ||
| log P | 1.09 | ||
| kH | 14 nmol Pa−1 kg−1 | ||
| Structur | |||
| Molecular shape | Tetrahedron | ||
| Dipole moment | 0 D | ||
| Thermochemistry | |||
| Speceefic heat capacity, C | 35.69 J K−1 mol−1 | ||
| Staundart molar entropy S |
186.25 J K−1 mol−1 | ||
| Std enthalpy o formation ΔfH |
−74.87 kJ mol−1 | ||
| Std enthalpy o combustion ΔcH |
−891.1–−890.3 kJ mol−1 | ||
| Hazards[2] | |||
| GHS pictograms |  |
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| GHS signal wird | DANGER | ||
| GHS hazard statements | H220 | ||
| GHS precautionary statements | P210 | ||
| EU clessification |  F+ |
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| R-phrases | R12 | ||
| S-phrases | (S2), S16, S33 | ||
| NFPA 704 | |||
| Flash pynt | −188 °C | ||
| Explosive leemits | 5–15% | ||
| Relatit compoonds | |||
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Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |||
Methane (/ˈmɛθeɪn/ or /ˈmiːθeɪn/) is a chemical compoond wi the chemical formula CH
4. It is the simplest alkane an the main component o naitural gas. The relative abundance o methane maks it an attractive fuel. However, acause it is a gas at normal condeetions, methane is difficult tae transport frae its soorce.
Methane is a potent greenhouse gas, mair potent than carbon dioxide unit per unit.[3] The concentration o methane in the Yird's atmosphere in 1998, expressed as a mole fraction, wis 1745 nmol/mol (parts per billion, ppb). Bi 2008, however, global methane levels, which haed stayed maistly flat syne 1998, haed risen tae 1800 nmol/mol.[4]
References[eedit | eedit soorce]
- ↑ 1.0 1.1 "methane (CHEBI:16183)". Chemical Entities of Biological Interest. UK: European Bioinformatics Institute. 17 October 2009. Main. Retrieved 10 October 2011.
- ↑ "Safety Datasheet, Material Name: Methane" (PDF). USA: Metheson Tri-Gas Incorporated. 4 December 2009. Retrieved 4 December 2011.
- ↑ NON-CO2 GREENHOUSE GASES IN THE ATMOSPHERE, Annual Review of Energy and the Environment, Vol. 24: 645-661 (Volume publication date November 1999, DOI: 10.1146/annurev.energy.24.1.645
- ↑ Carbon Dioxide, Methane Rise Sharply in 2007. Noaanews.noaa.gov (2008-04-23). Retrieved on 2012-05-24.
Freemit airtins[eedit | eedit soorce]
- Methane at The Periodic Table o Videos (Varsity o Nottingham)
- Gavin Schmidt, Methane: A Scientific Journey frae Obscurity tae Climate Super-Starndom, NASA Goddard, September 2004
- Methane thermodynamics
- Internaitional Chemical Safety Caird 0291
- Methane Hydrates
- Safety data for methane
- Catalytic conversion o methane tae mair uiseful chemicals an fuels
- CDC – Haundbeuk for Methane Control in Minin
