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Triisobutylaluminum from Germany

Triisobutylaluminum ((iBu)3Al) is a pyrophoric organoaluminum cocatalyst for Ziegler-Natta polymerization with Al-C bonds qualifying for 2931.90.90. Excluded from inorganic aluminum (Ch28) by chapter organo-inorganic definitions.

Duty Rate — Germany → United States

10%

Rate breakdown

9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%

Import Tips

UN3052 Pyrophoric aluminum alkyls; requires custom pressure-rated containers

Polymerization catalyst—end-user verification prevents diversion to explosives

Thermal decomposition hazard; shipping papers must specify max temperature