Molecular properties
- Formula
- C4H2O3
- Molar mass
- 98.06 g·mol−1
- Exact mass
- 98.0004 Da
- 4
- 0
- 3
- 43.40 Ų
- -0.1 (PubChem computed XLogP3-AA descriptor)
- CAS
- 108-31-6
- PubChem CID
- 7923
Molecule record
MALEIC ANHYDRIDE
C4H2O3
98.06 g/mol
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
Aromatic ring
Ester
Phenol
Physical properties
| Property | Value | Conditions | Source |
|---|---|---|---|
| Logp | -0.1 | PubChem computed XLogP3-AA descriptor | PubChem(link only) |
Common names and synonyms
- 108-31-6
- 2,5-Furandione
- 2,5-Furanedione
- 2,5-dihydrofuran-2,5-dione
- 203-571-6
- 606-024-3
- Anhydrid kyseliny maleinove
- Anhydride, Maleic
Show all 22 synonyms
- CHEBI:474859
- DTXCID804166
- DTXSID7024166
- Dihydro-2,5-dioxofuran
- Maleic acid anhydride
- Maleinanhydrid
- NSC 137651
- NSC-137651
- RCRA waste number U147
- RefChem:5978
- Toxilic anhydride
- V5877ZJZ25
- cis-Butenedioic anhydride
- furan-2,5-dione
Structure identifiers
- Canonical SMILES
- C1=CC(=O)OC1=O
- Isomeric SMILES
- C1=CC(=O)OC1=O
- InChI
- InChI=1S/C4H2O3/c5-3-1-2-4(6)7-3/h1-2H
- InChIKey
- FPYJFEHAWHCUMM-UHFFFAOYSA-N
- PubChem CID
- 7923
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)
1740 cm−1C=O ester (simulated)
1180 cm−1C-O ester (simulated)
3030 cm−1aromatic C-H (simulated)
1600 cm−1aromatic C=C (simulated)
2960 cm−1sp3 C-H (simulated)
Simulated NMR
On-demand educational prediction for MALEIC ANHYDRIDE; not experimental data.
Simulated EI mass spectrum
On-demand educational fragmentation for MALEIC ANHYDRIDE; 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.