Molecular properties
- Formula
- C2H2O4
- Molar mass
- 90.03 g·mol−1
- Exact mass
- 89.9953 Da
- 2
- 2
- 4
- 74.60 Ų
- -0.3 (PubChem computed XLogP3-AA descriptor)
- CAS
- 144-62-7
- PubChem CID
- 971
Molecule record
Oxalic acid
C2H2O4
90.03 g/mol
Show IUPAC name
IUPAC name
Ethanedioic acid
Interactions
- Polarity
- Often polar; exact polarity depends on size, substitution, and ionization state.
- 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
Alcohol
Carboxylic acid
Physical properties
| Property | Value | Conditions | Source |
|---|---|---|---|
| Logp | -0.3 | PubChem computed XLogP3-AA descriptor | PubChem(link only) |
Common names and synonyms
- 144-62-7
- 2-oxo-2-oxonioacetate
- 9E7R5L6H31
- Acid, Oxalic
- Acide oxalique
- Acido ossalico
- Acidum oxalicum
- Aktisal
Show all 22 synonyms
- Aquisal
- CHEBI:16995
- DTXCID805816
- DTXSID0025816
- Ethane-1,2-dioic acid
- Ethanedionic acid
- Kyselina stavelova
- NCI-C55209
- NSC-62774
- Oxaalzuur
- Oxalic acid, anhydrous
- Oxalsaeure
- Oxiric acid
- hydron;oxalate
Structure identifiers
- Canonical SMILES
- C(=O)(C(=O)O)O
- Isomeric SMILES
- C(=O)(C(=O)O)O
- InChI
- InChI=1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)
- InChIKey
- MUBZPKHOEPUJKR-UHFFFAOYSA-N
- PubChem CID
- 971
Spectroscopy
Tabs appear only for spectra stored with clear provenance.
Simulated FTIR trace
Predicted FTIR / %T
4 cm-1 resolution / deterministic instrument profile
Hover for cursor
Peak assignments
3350 cm−1broad O-H (simulated)
3000 cm−1broad acid O-H (simulated)
1710 cm−1C=O acid (simulated)
2960 cm−1sp3 C-H (simulated)
Simulated NMR
On-demand educational prediction for Oxalic acid; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for Oxalic acid; not experimental data.
Sources
Molecule identity
Retrieved 8/7/2026. Reuse status is summarized by the badge; open the source for full details.
simulated IR
ChemForge original educational simulation.