Fluorinated Dianhydride 4,4'-HFIPA from Germany
4,4'-HFIPA, or 4,4'-(hexafluoroisopropylidene)bis(phthalic anhydride), is a separate chemically defined compound used in gas separation membranes and high-performance polymers. It is an aromatic polycarboxylic anhydride, and its classification under heading 29.17 is based on its chemical structure.
Duty Rate — Germany → Canada
0%
Import Tips
• Confirm the product is the pure dianhydride; if it is hydrated or otherwise modified, classification may change
• The fluorinated nature is part of the compound and does not affect classification
• Provide the CAS number (1107-00-2) on the shipping documents