Triethylenetetramine (TETA) from Japan
Triethylenetetramine is an acyclic tetraamine (H2N(CH2CH2NH)3H) widely used in curing epoxy resins for composites and adhesives. It qualifies under HTS 2921.29.00 as an other acyclic polyamine and derivatives thereof.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Label with exact isomer content to distinguish from mixtures; ensure transport stabilizers documented; pitfall is classifying technical-grade vs pure forms differently