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Merck
CN

02391

Methane

puriss., ≥99.995% (GC)

Synonym(s):

Marsh gas

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About This Item

Empirical Formula (Hill Notation):
CH4
CAS Number:
74-82-8
Molecular Weight:
16.04
EC Number:
200-812-7
UNSPSC Code:
12352300
MDL number:
MFCD00008279
Beilstein/REAXYS Number:
1718732

Key Documents

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vapor density

0.55 (vs air)

grade

puriss.

assay

≥99.995% (GC)

form

gas

autoignition temp.

998 °F

expl. lim.

15 %

impurities

CO2, trace, N2, trace, O2, trace, water, trace, ≤0.0005% CnHm, ≤0.0015% ethane

bp

−161 °C (lit.)

mp

−183 °C (lit.)

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.

Packaging

pressure tin size 1L
filling pressure at 15°C: 11 bar; content (15°C, 1 bar): 11 l

Other Notes

Sales restrictions may apply

pictograms

FlameGas cylinder
GHS02,GHS04

signalword

Danger

hcodes

H220,H280

Hazard Classifications

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

Storage Class

2A - Gases

wgk

nwg

flash_point_f

-306.4 °F - closed cup

flash_point_c

-188 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves

Regulatory Information

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Ceri Hammond et al.
ChemSusChem, 5(9), 1668-1686 (2012-08-01)
The economically viable oxidative upgrading of methane presents one of the most difficult but rewarding challenges within catalysis research. Its potential to revolutionalise the chemical value chain, coupled with the associated supremely challenging scientific aspects, has ensured this topic's high
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
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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