Molecular properties
- Formula
- CO2
- Molar mass
- 44.01 g·mol−1
- Exact mass
- 43.9898 Da
- 2
- PubChem CID
- 280
Molecule record
carbon dioxide
CO2
44.01 g/mol
Loading structure
Functional groups
No functional-group assignment has been curated yet.
Physical properties
No source-backed physical properties are curated for this molecule yet.
Common names and synonyms
- 124-38-9
- 142M471B3J
- AER Fixus
- After-damp
- Anhydride carbonique
- Carbon oxide (CO2)
- Carbon oxide, di-
- Carbon-12 dioxide
Show all 24 synonyms
- Carbonic acid anhydride
- Carbonica
- DTXSID4027028
- Dioxido de carbono
- Dioxyde de carbone
- E-290
- E290
- INS NO.290
- INS-290
- Khladon 744
- Kohlendioxyd
- Kohlensaure
- R 744
- carbonic acid gas
- carbonic anhydride
- methanedione
Structure identifiers
- Canonical SMILES
- O=C=O
- Isomeric SMILES
- C(=O)=O
- InChI
- InChI=1S/CO2/c2-1-3
- InChIKey
- CURLTUGMZLYLDI-UHFFFAOYSA-N
- PubChem CID
- 280
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 carbon dioxide; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for carbon dioxide; not experimental data.
Sources
Molecule identity
Retrieved 8/20/2026. Reuse status is summarized by the badge; open the source for full details.