Triethylenetetramine (TETA) from China
Triethylenetetramine is an acyclic polyamine classified under HTS 2921.29.0020 as a chemically defined organic compound with multiple amine groups. It is primarily used as a curing agent in epoxy resin formulations for coatings, adhesives, and composites.
Duty Rate — China → United States
125%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Provide detailed chemical analysis certificates confirming purity >98% to avoid reclassification as mixtures under Chapter 38
• Ensure SDS and REACH compliance documentation for hazardous material handling during customs clearance
• Declare exact CAS number (112-24-3) and avoid packaging that suggests retail sale to prevent Chapter 38 misclassification