acetylene
C2H2
Acetylene has the molecular formula C2H2 and a molar mass of 26.04 g/mol and a melting point of -80.8 °C.
Properties
| Molecular formula | C2H2 |
|---|---|
| Molar mass | 26.04 g/mol |
| Exact (monoisotopic) mass | 26.01565 g/mol |
| Melting point | -80.75 °C |
| Density | 0.0011 g/cm³ |
| logP (octanol–water) | 0.4 |
| Topological polar surface area | 0 Ų |
| Hydrogen-bond donors / acceptors | 0 / 0 |
| Heavy atoms | 2 |
| InChIKey | HSFWRNGVRCDJHI-UHFFFAOYSA-N |
Elemental composition
4 atoms across 2 elements, by mass.
| Element | Atoms | Percent by mass |
|---|---|---|
| Carbon (C) | 2 | 92.26% |
| Hydrogen (H) | 2 | 7.74% |
Calculate with acetylene
- Molar mass and percent composition
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Related compounds
Molar mass and elemental composition are computed from IUPAC 2021 conventional atomic weights. Formula, exact mass and the computed descriptors come from PubChem, which is US government work and in the public domain. Melting point, boiling point and density come from Wikidata under CC0. Properties with no figure shown are absent from those sources rather than zero.