Diethylenetriamine (DETA) Impurity-Free TETA from Canada
High-purity triethylenetetramine specifically manufactured to minimize DETA impurities, classified under HTS 2921.29.0020. Critical for high-performance epoxy systems in aerospace composites.
Duty Rate — Canada → United States
100%
Rate breakdown
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
• Submit impurity profile showing <0.1% DETA to justify premium pricing and classification
• Include end-use statements for aerospace applications to facilitate drawback claims
• Use nitrogen-blanketed containers to prevent oxidation during ocean transit