Perfluoro-2-pentene from Mexico
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 — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Submit SEMATECH process qualification documentation
• Use helium leak detection certification (<1x10^-9 scc/sec)
• Declare 7N purity level for 3nm+ semiconductor compatibility