Trans-HFO-1234ze Isomer from Germany
The trans isomer of 1,1,3,3,3-Pentafluoro-2-(trifluoromethyl)-prop-1-ene (HFO-1234ze), a specific stereoisomer used in precision applications like specialty solvents. Classified under HTS 2903.59.10.10 as the named compound per Chapter 29 note (b) for mixtures of isomers. Its acyclic unsaturated fluorinated structure determines the tariff placement.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Include stereochemical analysis (NMR/chromatography) to confirm trans isomer identity for specific classification
• Label containers clearly distinguishing trans from cis or mixed isomers to prevent reclassification
• Monitor for anti-dumping duties on fluorinated compounds from certain origins