Triethylaluminum Cocatalyst from Mexico
Triethylaluminum is a pyrophoric organoaluminum compound used as Ziegler-Natta cocatalyst in polyolefin production. 2931.90.90.52 classification for Al-C organo-inorganic compounds.
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
• UN 3399 organometallic pyrophoric; only Type 4H1 bottles approved
• Spontaneously ignites in air; require dry-box repackaging capability
• Alkylaluminums monitored for export controls