Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Sourcing 3,3',4,4'-Biphenyltetracarboxylic dianhydride?
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2,3,3',4'-Biphenyltetracarboxylic dianhydride
monomer for polyimide synthesis
1,5-dibromo-2,4-dinitrobenzene
Chemical intermediate for synthesis
Sourcing 3,3',4,4'-Biphenyltetracarboxylic dianhydride?
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3,3',4,4'-Biphenyltetracarboxylic dianhydride is a chemical compound that serves as a monomer in the synthesis of polyimide polymers. It features a fused ring system containing anhydride functional groups.
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'-Biphenyltetracarboxylic dianhydride (CAS 2420-87-3) is 2917.39.
2917.39
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.
5-(1,3-dioxo-2-benzofuran-5-yl)-2-benzofuran-1,3-dione
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