C9H4O5
192.12 g/mol
Industrial ChemicalDanger
TRIMELLITIC ANHYDRIDE
CAS552-30-7EC209-008-0
Category
Industrial Chemical
Compound Class
Organic Acid
Primary Use
curing agent for epoxy resins
Trimellitic anhydride is an industrial chemical that appears as off-white flakes or crystals. It is primarily used as a curing agent for epoxy resins, contributing to the formation of durable coatings and insulation materials.
curing agent for epoxy resinsused in the synthesis of plasticizers and paintscomponent in wire insulation and adhesives
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
SimilarStructure SimilarSimilarity 0.74
4,4'-carbonyldiphthalic anhydride
CAS2421-28-5
curing agent for epoxy resins
ApplicationSame Use
Hexahydrophthalic anhydride
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curing agent for epoxy resins
ApplicationSame Use
Dimethyl thio-toluene diamine
CAS106264-79-3
curing agent for epoxy resins
ApplicationSame Use
Glutaric anhydride
CAS108-55-4
curing agent for epoxy resins
ApplicationSame Use
3-dimethylaminopropylamine
CAS109-55-7
curing agent for epoxy resins
ReferenceSame Category
2-nitrobenzaldehyde
CAS552-89-6
synthetic intermediate for organic synthesis
ReferenceSame Category
Isophthalide
CAS553-86-6
chemical intermediate for synthesis
ReferenceSame Category
Dimethyl oxalate
CAS553-90-2
Dimethyl ester of oxalic acid intermediate
Safety Reference
Danger
H317May cause an allergic skin reaction
H318Causes serious eye damage
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H303May be harmful if swallowed
H316Causes mild skin irritation
Regulatory Compliance1
- EU REACH SVHCEURegulation
Customs Tariff Classification
The international HS code for TRIMELLITIC ANHYDRIDE (CAS 552-30-7) is 2917.39.
HS code (international, 6-digit)
2917.39
EU CN code (8-digit)
2917 39 85
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
1,3-dioxo-2-benzofuran-5-carboxylic acid
InChIKey
SRPWOOOHEPICQU-UHFFFAOYSA-N
SMILES
C1=CC2=C(C=C1C(=O)O)C(=O)OC2=O
Synonyms (41)
- TMAN
- 4-Carboxyphthalic anhydride
- Anhydrotrimellic acid
- Anhydrotrimellitic acid
- Epon 9150
- TRIMELLITIC ANHYDRIDE
- TRIMELLITIC ANHYDRIDE (TMA)
- Trimellic acid 1,2-anhydride
- Trimellic acid anhydride
- Trimellitic acid anhydride
- Trimellitic acid,2-anhydride
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