|
gptkbp:instanceOf
|
gptkb:chemical_compound
|
|
gptkbp:appearance
|
colorless gas
|
|
gptkbp:aroma
|
odorless
|
|
gptkbp:autoignitionTemperature
|
537 °C
|
|
gptkbp:boilingPoint
|
-161.5 °C
|
|
gptkbp:bondAngle
|
109.5°
|
|
gptkbp:CASNumber
|
74-82-8
|
|
gptkbp:chemicalFormula
|
CH4
|
|
gptkbp:component
|
biogas
firedamp
|
|
gptkbp:criticalFor
|
4.60 MPa
-82.6 °C, 4.60 MPa
|
|
gptkbp:criticalTemperature
|
-82.6 °C
|
|
gptkbp:density
|
0.656 kg/m³ (at 0 °C, 1 atm)
|
|
gptkbp:discoveredBy
|
gptkb:Alessandro_Volta
|
|
gptkbp:discoveredIn
|
1776
|
|
gptkbp:EC_number
|
200-812-7
|
|
gptkbp:flammability
|
highly flammable
|
|
gptkbp:foundIn
|
gptkb:Earth
gptkb:Mars
gptkb:Titan
|
|
gptkbp:globalWarmingPotential
|
~28-36 (over 100 years, relative to CO2)
|
|
gptkbp:GmelinNumber
|
56
|
|
gptkbp:greenhouseGas
|
yes
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Methane (CH4)
|
|
gptkbp:IUPACName
|
methane
|
|
gptkbp:mainConstituent
|
natural gas
|
|
gptkbp:meltingPoint
|
-182.5 °C
|
|
gptkbp:molecularWeight
|
16.04 g/mol
|
|
gptkbp:oxidationProduct
|
gptkb:water
carbon dioxide
|
|
gptkbp:producedBy
|
methanogenic archaea
anaerobic decomposition
|
|
gptkbp:PubChem_CID
|
297
|
|
gptkbp:refractiveIndex
|
1.000444 (gas, 0 °C)
|
|
gptkbp:riskFactor
|
explosive
asphyxiant
|
|
gptkbp:RTECSNumber
|
PA1490000
|
|
gptkbp:solubility
|
22.7 mg/L (at 20 °C)
|
|
gptkbp:source
|
gptkb:wetlands
natural gas fields
rice paddies
landfills
coal mines
ruminant digestion
biomass burning
|
|
gptkbp:storage
|
compressed gas cylinders
|
|
gptkbp:structure
|
tetrahedral
|
|
gptkbp:UNNumber
|
1971
|
|
gptkbp:usedAs
|
gptkb:gasoline
chemical feedstock
|
|
gptkbp:vaporPressure
|
4.6 MPa (at 25 °C)
|
|
gptkbp:bfsParent
|
gptkb:Covalent_Bond
|
|
gptkbp:bfsLayer
|
7
|