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463035

Sigma-Aldrich

Methane

electronic grade, ≥99.998%

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Synonym(s):
Marsh gas, Methyl hydride
Empirical Formula (Hill Notation):
CH4
CAS Number:
74-82-8
Molecular Weight:
16.04
Beilstein:
1718732
EC Number:
200-812-7
MDL number:
MFCD00008279
UNSPSC Code:
12352300
PubChem Substance ID:
24869888
NACRES:
NA.23

grade

electronic grade

Quality Level

100

vapor density

0.55 (vs air)

Assay

≥99.998%

form

gas

autoignition temp.

998 °F

expl. lim.

15 %

impurities

<2 ppm CO
<2 ppm CO2
<3 ppm Water (H2O)
<5 ppm Ethane (C2H5)
<5 ppm Nitrogen (N2)

bp

−161 °C (lit.)

mp

−183 °C (lit.)

transition temp

critical temperature −82.1 °C

density

0.716 g/mL at 25 °C (lit.)

SMILES string

[H]C([H])([H])[H]

InChI

1S/CH4/h1H4

InChI key

VNWKTOKETHGBQD-UHFFFAOYSA-N

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Features and Benefits

Methane is used as a carbon source for the chemical vapor deposition (CVD) of carbide and diamond thin films.

Recommended products

High-purity regulators Z527378 or Z527386 are recommended.

Pictograms

FlameGas cylinder
GHS02,GHS04

Signal Word

Danger

Hazard Statements

H220,H280

Precautionary Statements

P210 - P377 - P381 - P410 + P403

Hazard Classifications

Flam. Gas 1A - Press. Gas Compr. Gas

WGK

nwg

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Jeanette Ringvoll et al.
The EMBO journal, 25(10), 2189-2198 (2006-04-28)
Two human homologs of the Escherichia coli AlkB protein, denoted hABH2 and hABH3, were recently shown to directly reverse 1-methyladenine (1meA) and 3-methylcytosine (3meC) damages in DNA. We demonstrate that mice lacking functional mABH2 or mABH3 genes, or both, are
Judlyn Fernandes et al.
The Journal of nutrition, 143(8), 1269-1275 (2013-06-07)
Recent attention has focused on the significance of colonic Archaea in human health and energy metabolism. The main objectives of this study were to determine the associations among the number of fecal Archaea, body mass index (BMI), fecal short chain
Mohamed F Haroon et al.
Nature, 500(7464), 567-570 (2013-07-31)
Anaerobic oxidation of methane (AOM) is critical for controlling the flux of methane from anoxic environments. AOM coupled to iron, manganese and sulphate reduction have been demonstrated in consortia containing anaerobic methanotrophic (ANME) archaea. More recently it has been shown
Cornelia Welte et al.
Biochimica et biophysica acta, 1837(7), 1130-1147 (2013-12-18)
Methane-forming archaea are strictly anaerobic microbes and are essential for global carbon fluxes since they perform the terminal step in breakdown of organic matter in the absence of oxygen. Major part of methane produced in nature derives from the methyl
C Berndt et al.
Science (New York, N.Y.), 343(6168), 284-287 (2014-01-05)
Methane hydrate is an icelike substance that is stable at high pressure and low temperature in continental margin sediments. Since the discovery of a large number of gas flares at the landward termination of the gas hydrate stability zone off
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