Mixed Butene Isomers (C4 Raffinate) from Germany
C4 raffinate stream containing 1-butene, 2-butene (cis/trans), and isobutene, classified as butene isomers under HTS 2901.23.00.00 when meeting purity standards.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Detailed GC composition report required showing butene dominance (>90%)
• ISO tank documentation must specify exact isomer breakdown
• Monitor butadiene content (<50ppm) to avoid 2901.24 reclassification