C4H2O3
98.06 g/mol
Industrial ChemicalDanger
MALEIC ANHYDRIDE
CAS108-31-6EC203-571-6
Category
Industrial Chemical
Compound Class
Heterocycle
Primary Use
Diels-Alder syntheses and copolymerization reactions
Maleic anhydride is an organic compound that functions as the acid anhydride of maleic acid. It is a colorless or white solid with an acrid odor, primarily used in Diels-Alder syntheses and copolymerization reactions.
Diels-Alder synthesescopolymerization reactions
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
Acrylic acid-maleic anhydride copolymer
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polymer intermediate
ReferenceSame Category
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chemical intermediate for synthesis
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industrial organic synthesis intermediate
ReferenceSame Category
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Solvent and chemical intermediate
Referencestereoisomer of
(²H₂)Furan-2,5-dione
CAS33225-51-3
research compound
Referencesame scaffold
Citraconic anhydride
CAS616-02-4
Monomer for unsaturated polyester resins
Referencesame scaffold
3,4-Difluorofuran-2,5-dione
CAS669-78-3
research compound
Safety Reference
Danger
H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H372Causes damage to organs through prolonged or repeated exposure
H370Causes damage to organs
H373May cause damage to organs through prolonged or repeated exposure
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects
H311Toxic in contact with skin
H330Fatal if inhaled
H371May cause damage to organs
H335May cause respiratory irritation
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for MALEIC ANHYDRIDE (CAS 108-31-6) is 2917.14.
HS code (international, 6-digit)
2917.14
EU CN code (8-digit)
2917 14 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
furan-2,5-dione
InChIKey
FPYJFEHAWHCUMM-UHFFFAOYSA-N
SMILES
C1=CC(=O)OC1=O
Synonyms (31)
- 2,5-Furandione
- 2,5-Furanedione
- 2,5-dihydrofuran-2,5-dione
- Anhydrid kyseliny maleinove
- Anhydride, Maleic
- Dihydro-2,5-dioxofuran
- Lytron 810 (Salt/Mix)
- Lytron 820 (Salt/Mix)
- MALEIC ANHYDRIDE
- Maleic Anhydrides
- Maleic acid anhydride
- Maleic anhydride (NIST)
- Maleic anhydride (briquette)
- Maleic anhydride treated BSA
- Maleic anhydride, briquettes
- Maleic anhydride, powder
- Maleic anhydride-13C4
- Maleinanhydrid
- Maleinanhydrid [Czech]
- Toxilic anhydride
- cis-Butenedioic anhydride
- fumaric anhydride
- furan-2,5-dione
- furan-2,5-quinone
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