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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/REAXYS Number:
1718732
EC Number:
200-812-7
MDL number:
MFCD00008279
UNSPSC Code:
41116107
PubChem Substance ID:
24869888
NACRES:
NA.23

grade

electronic grade

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

signalword

Danger

hcodes

H220,H280

Hazard Classifications

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

Storage Class

2A - Gases

wgk_germany

nwg

flash_point_f

-306.4 °F - closed cup

flash_point_c

-188 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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T H Florin et al.
Gut, 37(3), 418-421 (1995-09-01)
The factors that regulate methanogenesis in humans have not been established. The presence of bile acid, which is lost into the colon from the small intestine, may be an important regulatory factor of methanogenesis. To examine this possibility, the effect
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
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
Feng-Ping Wang et al.
The ISME journal, 8(5), 1069-1078 (2013-12-18)
Anaerobic oxidation of methane (AOM) is a crucial process limiting the flux of methane from marine environments to the atmosphere. The process is thought to be mediated by three groups of uncultivated methane-oxidizing archaea (ANME-1, 2 and 3). Although the
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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