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Perfluoro-2-pentene from China

Perfluoro-2-pentene serves as a selective etchant for advanced semiconductor nodes. Falls under HTS 2903.59.90.00 as unsaturated fluorinated acyclic hydrocarbon isomer. Chapter 29 classification rules prioritize principal chemical character.

Duty Rate — China → United States

16.2%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Submit SEMATECH process qualification documentation

Use helium leak detection certification (<1x10^-9 scc/sec)

Declare 7N purity level for 3nm+ semiconductor compatibility