Tetrabutylammonium Bromide (TBAB) from Japan
Tetrabutylammonium bromide is a phase-transfer catalyst and ionic liquid precursor used in organic synthesis. This quaternary ammonium salt is classified under HTS 2923.90.0100 as a chemically defined organic compound with the characteristic quat structure. Chapter notes prioritize the last numerical heading for such salts.
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%
Import Tips
• Supply Certificate of Analysis (COA) confirming >98% purity for lab chemical status
• Small quantities for R&D may qualify for duty relief under HTS provisions
• Prevent misclassification by specifying non-mixture status