Technical Grade Tetraethylene Pentamine 95% from Mexico
Technical grade TEPA at 95% purity contains minor impurities but remains a separate chemically defined acyclic polyamine under HTS 2921.29.0010 per Chapter 29 note (a). Used in epoxy resin hardeners and chelating agents.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit assay reports showing >90% TEPA content to distinguish from mixtures classifiable in Chapter 38
• Label containers with UN 2261 hazardous classification and include stabilizer declarations if present