Safety Reference
Warning
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing 3,3',4,4'-Benzophenonetetracarboxylic dianhydride?
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Glutaric anhydride
curing agent for epoxy resins
1,5-dibromo-2,4-dinitrobenzene
Chemical intermediate for synthesis
Sourcing 3,3',4,4'-Benzophenonetetracarboxylic dianhydride?
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3,3',4,4'-Benzophenonetetracarboxylic dianhydride (BTDA) is an aromatic organic acid dianhydride. It is primarily used as a curing agent for epoxy resins in industrial applications.
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.
The international HS code for 3,3',4,4'-Benzophenonetetracarboxylic dianhydride (CAS 2421-28-5) is 2918.30.
2918.30
2918 30 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
5-(1,3-dioxo-2-benzofuran-5-carbonyl)-2-benzofuran-1,3-dione
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