Safety Reference
H412Harmful to aquatic life with long lasting effects
Sourcing 4,4'-Oxydiphthalic anhydride?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
2-amino-6-methylpyridine
chemical intermediate
Sourcing 4,4'-Oxydiphthalic anhydride?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
4,4'-Oxydiphthalic anhydride is an organic compound containing two phthalic anhydride units linked by an ether bridge. It is primarily used as a monomer in the synthesis of polyimide polymers.
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 4,4'-Oxydiphthalic anhydride (CAS 1823-59-2) is 2918.99.
2918.99
2918 99 90
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)oxy]-2-benzofuran-1,3-dione
QQGYZOYWNCKGEK-UHFFFAOYSA-N
C1=CC2=C(C=C1OC3=CC4=C(C=C3)C(=O)OC4=O)C(=O)OC2=O