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