Tetraethylene Pentamine with Stabilizer from Mexico
TEPA containing added stabilizers for preservation falls under HTS 2921.29.0010 per Chapter 29 note (f), remaining classified as the base acyclic polyamine. Used in asphalt emulsifiers and fabric softeners.
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
• Document stabilizer type and concentration (<1% typically) to qualify under Chapter 29 note (f) exceptions
• Avoid anti-dusting agents exceeding safety/transport limits, which could trigger Chapter 38 reclassification