Molecular properties
- Formula
- CH4
- Molar mass
- 16.04 g·mol−1
- Exact mass
- 16.0313 Da
- 0
- 0
- 0
- 0.00 Ų
- 0.6 (PubChem computed XLogP3-AA descriptor)
- CAS
- 74-82-8
- PubChem CID
- 297
Molecule record
methane
CH4
16.04 g/mol
Interactions
- Polarity
- Often weakly polar or nonpolar unless other structural features dominate.
- Acid-base behavior
- Review ionizable groups and pKa data where available; ChemForge does not infer definitive acid-base state from identity alone.
- Intermolecular forces
- Assess dispersion, dipole interactions, hydrogen bonding, and ionic character from the functional groups shown.
Functional groups
No functional-group assignment has been curated yet.
Physical properties
| Property | Value | Conditions | Source |
|---|---|---|---|
| Logp | 0.6 | PubChem computed XLogP3-AA descriptor | PubChem(link only) |
Common names and synonyms
- 74-82-8
- AC1L18XA
- BRN 1718732
- Biogas
- CH4
- CHEBI:16183
- DTXSID8025545
- Fire Damp
Show all 23 synonyms
- HSDB 167
- Marsh gas
- Methane in gaseus state
- Methane-12C
- Methyl hydride
- OP0UW79H66
- R 50
- R 50 (refrigerant)
- RefChem:6654
- UN1971
- UN1972
- UNII-OP0UW79H66
- metano
- methane;tetrahydridocarbon
- tetrahydridocarbon
Structure identifiers
- Canonical SMILES
- C
- Isomeric SMILES
- C
- InChI
- InChI=1S/CH4/h1H4
- InChIKey
- VNWKTOKETHGBQD-UHFFFAOYSA-N
- PubChem CID
- 297
Spectroscopy
Tabs appear only for spectra stored with clear provenance.
No redistributable or simulated spectroscopy record is attached yet.
Simulated NMR
On-demand educational prediction for methane; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for methane; not experimental data.
Sources
Molecule identity
Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.