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2931.90.90.52/Triethylaluminum Cocatalyst/Japan

Triethylaluminum Cocatalyst from Japan

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 — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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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

Triethylaluminum Cocatalyst from Japan — Import Duty Rate | HTS 2931.90.90.52