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463035

Sigma-Aldrich

Methane

electronic grade, ≥99.998%

Synonym(s):

Marsh gas, Methyl hydride

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About This Item

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:
41116107
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

Storage Class Code

2A - Gases

WGK

nwg

Flash Point(F)

-306.4 °F - closed cup

Flash Point(C)

-188 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX0238
MKCW9401
MKCS6767
MKCM1933
MKBR0641V

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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
P J Gerber et al.
Animal : an international journal of animal bioscience, 7 Suppl 2, 220-234 (2013-06-14)
Although livestock production accounts for a sizeable share of global greenhouse gas emissions, numerous technical options have been identified to mitigate these emissions. In this review, a subset of these options, which have proven to be effective, are discussed. These
A N Hristov et al.
Journal of animal science, 91(11), 5095-5113 (2013-09-21)
The goal of this review was to analyze published data on animal management practices that mitigate enteric methane (CH4) and nitrous oxide (N2O) emissions from animal operations. Increasing animal productivity can be a very effective strategy for reducing greenhouse gas
A N Hristov et al.
Journal of animal science, 91(11), 5045-5069 (2013-09-21)
The goal of this review was to analyze published data related to mitigation of enteric methane (CH4) emissions from ruminant animals to document the most effective and sustainable strategies. Increasing forage digestibility and digestible forage intake was one of the
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