4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride) 98% purity from Japan
4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride) at 98% purity is a high-purity aromatic polycarboxylic anhydride used in polyimide synthesis. It is a separate chemically defined compound, and the purity level ensures it meets the definition under Chapter 29.
Duty Rate — Japan → Canada
0%
Import Tips
• Document the purity level to confirm it is a separate chemically defined compound
• The fluorinated bridge is part of the chemical structure and does not affect classification
• Provide the CAS number (1107-00-2) and a certificate of analysis if requested