Methane
A simple hydride, CH4, 16.043 g/mol. Boiling point -258 °F at 760 mmHg, melting point -296 °F, as published. Appears in 1 documented reaction.
Identifiers
- Molecular formula
- CH₄
- Molecular weight
- 16.043 g/mol
- Exact mass
- 16.0313 g/mol
- IUPAC name
- methane
- C
- InChI=1S/CH4/h1H4
- VNWKTOKETHGBQD-UHFFFAOYSA-N
Measured properties
- Boiling Point
- -258 °F at 760 mmHg (USCG, 1999)
- -258.7 °F at 760 mmHg (NTP, 1992)
- Melting Point
- -296 °F (USCG, 1999)
- -296.5 °F (NTP, 1992)
- Density
- 0.415 to 0.45 at -259.6 °F (USCG, 1999)
- 0.422 at -256 °F (USCG, 1999) - Less dense than water; will float
- Solubility
- 3.5 mL/100 mL at 63 °F (NTP, 1992)
- In water, 22 mg/L at 25 °C
- Vapor Pressure
- 258574 mmHg at 100 °F ; 760 mmHg at -258.7 °F (NTP, 1992)
- VP: 1 Pa at -220 °C (solid); -10 Pa at 214.2 °C (solid); 100 Pa at -206.8 °C (solid); 1 kPa at -197 °C (solid); 10 kPa at -183.6 °C (solid); 100 kPa at -161.7 °C
- LogP
- log Kow = 1.09
- 1.09
- Flash Point
- -306 °F (NTP, 1992)
- -306 °F
Calculated properties
- logP
- 0.6361
- Topological polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Rotatable bonds
- 0
- Molar refractivity
- 6.731 cm³/mol
- Fraction sp³ carbons
- 1
- QED drug-likeness
- 0.3598
What it is made of
Elements
Structure
- Heavy atoms, hydrogen excluded
- 1
- Total atoms, hydrogen included
- 5
- Rings
- 0
- Aromatic rings
- 0
- Stereocentres
- 0
- Formal charge
- 0
The molecule in three dimensions
The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.
Reactions it appears in
1 documented reaction involves Methane, each with a written procedure and a source, and all of them are combustion. A few are shown.
Other names for it
The systematic name on this record is methane.
The sources also call it Marsh gas, Methyl hydride, Fire Damp, Biogas, R 50 (refrigerant), metano, tetrahydridocarbon, HSDB 167, Methane in gaseus state.
Structurally related
Seen alongside it in reaction records
Molecules that appear in the same recorded reactions as Methane. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.
1,8-Diazabicyclo(5.4.0)undec-7-ene
used as a reactant
C₉H₁₆N₂, 152.241 g/mol.
(+/-)-3-[7-[3-(2-hydroxy-ethyl)-phenylamino]-3-(4-methoxy-phenyl)-4-methyl-2-oxo-3,4-dihydro-2H-pyrimido[4,5-d]pyrimidin-1-yl]-benzonitrile
used as a reactant
C₂₉H₂₆N₆O₃, 506.566 g/mol.
(8-methylquinolin-7-yl)(1-trityl-1H-imidazol-4-yl)methanone
used as a reactant
C₃₃H₂₅N₃O, 479.583 g/mol.
1'-Benzyl-5H-spiro[furo[3,4-b]pyridine-7,4'-piperidine]
formed as a product
C₁₈H₂₀N₂O, 280.371 g/mol.
Where these values came from
chemistry engine
What this page does not claim
Identifiers are copied from the source record, measured values are reported as published, and calculated values are marked as calculated. Nothing here is a hazard, purity or handling assessment — how the library is checked.
Where to next
More molecules under M
The rest of this shelf, a hundred names at a time.
Molar mass calculator
Work with CH4 in a calculation, with every element's contribution shown.
Molarity calculator
Grams of Methane for a volume and a concentration, or the concentration a mass gives.
Open in ReactionLens
The full record in the workstation: every atom, every bond, and the reactions it appears in.